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Li G, Qiu T, Wu Q, Zhao Z, Wang L, Li Y, Geng Y, Tan H. Pyrene-Alkyne-Based Conjugated Porous Polymers with Skeleton Distortion-Mediated ⋅O 2 - and 1O 2 Generation for High-Selectivity Organic Photosynthesis. Angew Chem Int Ed Engl 2024; 63:e202405396. [PMID: 38818672 DOI: 10.1002/anie.202405396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/28/2024] [Accepted: 05/29/2024] [Indexed: 06/01/2024]
Abstract
Reactive oxygen species (ROS) play a crucial role in determining photocatalytic reaction pathways, intermediate species, and product selectivity. However, research on ROS regulation in polymer photocatalysts is still in its early stages. Herein, we successfully achieved series of modulations to the skeleton of Pyrene-alkyne-based (Tetraethynylpyrene (TEPY)) conjugated porous polymers (CPPs) by altering the linkers (1,4-dibromobenzene (BE), 4,4'-dibromobiphenyl (IP), and 3,3'-dibromobiphenyl (BP)). Experiments combined with theoretical calculations indicate that BE-TEPY exhibits a planar structure with minimal exciton binding energy, which favors exciton dissociation followed by charge transfer with adsorbed O2 to produce ⋅O2 -. Thus BE-TEPY shows optimal photocatalytic activity for phenylboronic acid oxidation and [3+2] cycloaddition. Conversely, the skeleton of BP-TEPY is significantly distorted. Its planar conjugation decreases, intersystem crossing (ISC) efficiency increases, which makes it more prone for resonance energy transfer to generate 1O2. Therefore, BP-TEPY displays best photocatalytic activity in [4+2] cycloaddition and thioanisole oxidation. Both above reactant conversion and its product selectivity exceed 99 %. This work systematically reveals the intrinsic structure-activity relationship among the skeleton structure of CPPs, excitonic behavior, and selective generation of ROS, providing new insights for the rational design of highly efficient and selective CPPs photocatalysts.
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Affiliation(s)
- Guobang Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
| | - Tianyu Qiu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
| | - Qi Wu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
| | - Zhao Zhao
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
| | - Lili Wang
- State Key Laboratory for Superlattices and Microstructures Institute of Semiconductors, Chinese Academy of Sciences, Beijing, 100083, P. R. China
| | - Yangguang Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
| | - Yun Geng
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
| | - Huaqiao Tan
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education Faculty of Chemistry, Faculty of Physics, Northeast Normal University, Changchun, 130024, China
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2
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Lin WC, Wu YH, Sun YE, Elsenety MM, Lin WC, Yen JC, Hsu HK, Chen BH, Huang HY, Chang CA, Huang TF, Zhuang YR, Tseng YT, Lin KH, Yang SD, Yu CH, Chou HH. Symmetry-breaking of Dibenzo[b,d]thiophene Sulfone Enhancing Polaron Generation for Boosted Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2024; 63:e202407702. [PMID: 38751355 DOI: 10.1002/anie.202407702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Indexed: 06/28/2024]
Abstract
The current bottleneck in the development of efficient photocatalysts for hydrogen evolution is the limited availability of high-performance acceptor units. Over the past nine years, dibenzo[b,d]thiophene sulfone (DBS) has been the preferred choice for the acceptor unit. Despite extensive exploration of alternative structures as potential replacements for DBS, a superior substitute remains elusive. In this study, a symmetry-breaking strategy was employed on DBS to develop a novel acceptor unit, BBTT-1SO. The asymmetric structure of BBTT-1SO proved beneficial for increasing multiple moment and polarizability. BBTT-1SO-containing polymers showed higher efficiencies for hydrogen evolution than their DBS-containing counterparts by up to 166 %. PBBTT-1SO exhibited an excellent hydrogen evolution rate (HER) of 222.03 mmol g-1 h-1 and an apparent quantum yield of 27.5 % at 500 nm. Transient spectroscopic studies indicated that the BBTT-1SO-based polymers facilitated electron polaron formation, which explains their superior HERs. PBBTT-1SO also showed 14 % higher HER in natural seawater splitting than that in deionized water splitting. Molecular dynamics simulations highlighted the enhanced water-PBBTT-1SO polymer interactions in salt-containing solutions. This study presents a pioneering example of a substitute acceptor unit for DBS in the construction of high-performance photocatalysts for hydrogen evolution.
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Affiliation(s)
- Wei-Cheng Lin
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Yi-Hsiang Wu
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Yu-En Sun
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Mohamed M Elsenety
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
- Department of Chemistry, Faculty of Science, Al-Azhar University, Yosief Abbas Street, Cairo, 11754, Cairo, Egypt
| | - Wan-Chi Lin
- Academy of Innovative Semiconductor and Sustainable Manufacturing, National Cheng Kung University, No.1, University Road, Tainan City, 701, Taiwan R.O.C
| | - Jui-Chen Yen
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Hung-Kai Hsu
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Bo-Han Chen
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Hung-Yi Huang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Chia-An Chang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Tse-Fu Huang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Ying-Rang Zhuang
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Yuan-Ting Tseng
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Kun-Han Lin
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Shang-Da Yang
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
- Center for Photonics Research, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
| | - Chi-Hua Yu
- Academy of Innovative Semiconductor and Sustainable Manufacturing, National Cheng Kung University, No.1, University Road, Tainan City, 701, Taiwan R.O.C
- Department of Engineering Science, National Cheng Kung University, No.1, University Road, Tainan City, 701, Taiwan R.O.C
| | - Ho-Hsiu Chou
- Department of Chemical Engineering, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
- Center for Photonics Research, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
- College of Semiconductor Research, National Tsing Hua University, 101, Section 2, Kuang-Fu Road, Hsinchu, 300044, Taiwan R.O.C
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3
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Kommula B, Chakraborty S, Banoo M, Roy RS, Sil S, Swarnkar A, Rawat B, Kailasam K, Gautam UK. Waste Polyethylene-Derived Carbon Dots: Administration of Metal-Free Oxidizing Agents for Tunable Properties and Photocatalytic Hyperactivity. ACS APPLIED MATERIALS & INTERFACES 2024; 16:39470-39481. [PMID: 39029128 DOI: 10.1021/acsami.4c08635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2024]
Abstract
The possibility of converting waste plastics into carbon dots (CDs) with 100% efficiencies using KMnO4 has emerged as a significant discovery in mitigating plastic pollution and upcycling. However, the lack of tunability of their properties, viz. aerial O2 harvesting, light-induced autophagy, and photoactivity using air as a free oxidant, has remained a bottleneck. Besides, the toxicity of KMnO4 makes the process less sustainable. Attempting to bridge these gaps, herein, we demonstrate the preparation of CDs using polyethylene with enormous controllability of their properties by utilizing less-toxic and metal-residue-free oxidizers, e.g., H2O2, HNO3, HClO4, and NaClO. We obtain structurally diverse CDs with controllable luminescent quantum yields (∼0.5-8%), excitonic lifetimes (1.3-2.3 ns), and binding energies (147-290 meV). These CDs exhibit a hugely extended range of molecular O2 harvesting (∼405-650 μM) with different amounts of strongly and weakly surface-bound O2 molecules within an estimated ratio of ∼0.77-2.51. Autophagy varied from 14 days to a nearly "no-autophagy" show. We efficiently utilized their oxygen harvesting and photocatalytic abilities to synthesize imine compounds from the corresponding amines in the open air (rate constant of ∼0.055 min-1), surpassing the literature efficiencies achieved using an O2 flow and noble metals. Notably, due to oxygen harvesting by CDs, no additional rate enhancement was observed after O2 purging, establishing the role of CDs in making free air an excellent oxidizing agent.
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Affiliation(s)
- Bramhaiah Kommula
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
| | - Sagnik Chakraborty
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
| | - Maqsuma Banoo
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
| | - Raj Sekhar Roy
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
| | - Supriya Sil
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
| | - Abhishek Swarnkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
| | - Bhawna Rawat
- Advanced Functional Nanomaterials, Institute of Nano Science and Technology (INST), Knowledge City, Sector-81, Manauli, Mohali, SAS Nagar, Punjab 140306, India
| | - Kamalakannan Kailasam
- Advanced Functional Nanomaterials, Institute of Nano Science and Technology (INST), Knowledge City, Sector-81, Manauli, Mohali, SAS Nagar, Punjab 140306, India
| | - Ujjal K Gautam
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)-Mohali, Mohali, SAS Nagar, Punjab 140306, India
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4
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Xu H, Xia S, Li C, Li Y, Xing W, Jiang Y, Chen X. Programming Tetrathiafulvalene-Based Covalent Organic Frameworks for Promoted Photoinduced Molecular Oxygen Activation. Angew Chem Int Ed Engl 2024; 63:e202405476. [PMID: 38706228 DOI: 10.1002/anie.202405476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/23/2024] [Accepted: 05/05/2024] [Indexed: 05/07/2024]
Abstract
Despite the pivotal role of molecular oxygen (O2) activation in artificial photosynthesis, the activation efficiency is often restricted by sluggish exciton dissociation and charge transfer kinetics within polymer photocatalysts. Herein, we propose two tetrathiafulvalene (TTF)-based imine-linked covalent organic frameworks (COFs) with tailored donor-acceptor (D-A) structures, TTF-PDI-COF and TTF-TFPP-COF, to promote O2 activation. Because of enhanced electron push-pull interactions that facilitated charge separation and transfer behavior, TTF-PDI-COF exhibited superior photocatalytic activity in electron-induced O2 activation reactions over TTF-TFPP-COF under visible light irradiation, including the photosynthesis of (E)-3-amino-2-thiocyano-α,β-unsaturated compounds and H2O2. These findings highlight the significant potential of the rational design of COFs with D-A configurations as suitable candidates for advanced photocatalytic applications.
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Affiliation(s)
- Hetao Xu
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Shuling Xia
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Chunlei Li
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yang Li
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Wandong Xing
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yi Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Xiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
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5
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Dey A, Chakraborty S, Singh A, Rahimi FA, Biswas S, Mandal T, Maji TK. Microwave Assisted Fast Synthesis of a Donor-Acceptor COF Towards Photooxidative Amidation Catalysis. Angew Chem Int Ed Engl 2024; 63:e202403093. [PMID: 38679566 DOI: 10.1002/anie.202403093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/30/2024] [Accepted: 04/25/2024] [Indexed: 05/01/2024]
Abstract
The synthesis of covalent organic frameworks (COFs) at bulk scale require robust, straightforward, and cost-effective techniques. However, the traditional solvothermal synthetic methods of COFs suffer low scalability as well as requirement of sensitive reaction environment and multiday reaction time (2-10 days) which greatly restricts their practical application. Here, we report microwave assisted rapid and optimized synthesis of a donor-acceptor (D-A) based highly crystalline COF, TzPm-COF in second (10 sec) to minute (10 min) time scale. With increasing the reaction time from seconds to minutes crystallinity, porosity and morphological changes are observed for TzPm-COF. Owing to visible range light absorption, suitable band alignment, and low exciton binding energy (Eb=64.6 meV), TzPm-COF can efficaciously produce superoxide radical anion (O2 .-) after activating molecular oxygen (O2) which eventually drives aerobic photooxidative amidation reaction with high recyclability. This photocatalytic approach works well with a variety of substituted aromatic aldehydes having electron-withdrawing or donating groups and cyclic, acyclic, primary or secondary amines with moderate to high yield. Furthermore, catalytic mechanism was established by monitoring the real-time reaction progress through in situ diffuse reflectance infrared Fourier transform spectroscopic (DRIFTS) study.
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Affiliation(s)
- Anupam Dey
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
| | - Samiran Chakraborty
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
| | - Ashish Singh
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
| | - Faruk Ahamed Rahimi
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
| | - Sandip Biswas
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
| | - Tamagna Mandal
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
| | - Tapas Kumar Maji
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur, Bangalore, 560064, India
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6
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Wang Y, Peng H, Song M, Song H, Liu Y, Chen P, Yin SF. Tuning Dynamic Structural Evolution of Bi 24O 31Cl 10 for Enhancing Piezo-Photocatalytic Nitrogen Oxidation to Nitrate. NANO LETTERS 2024; 24:8038-8045. [PMID: 38885183 DOI: 10.1021/acs.nanolett.4c01697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Direct nitrogen oxidation into nitrate under ambient conditions presents a promising strategy for harsh and multistep industrial processes. However, the dynamic structural evolution of active sites in surface reactions constitutes a highly intricate endeavor and remains in its nascent stage. Here, we constructed a Bi24O31Cl10 material with moiré superlattice structure (BCMS) for direct piezo-photocatalytic oxidation of nitrogen into nitrate. Excitingly, BCMS achieved excellent nitric acid production (15.44 mg g-1 h-1) under light and pressure conditions. Detailed experimental results show that the unique structure extracts the local strain tensor from the constricting Bi-Bi bond and Bi-O bond for internal structural reconstruction, which promotes the formation of electron and reactive molecule vortexes to facilitate charge transfer as well as N2 and O2 adsorption. Ultimately, these initiatives strengthen electron exchange between the superoxide radical and nitrogen as well as the binding strength of multiple intermediates, which swayingly adjusts the reaction path and energy barriers.
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Affiliation(s)
- Yi Wang
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Haiyan Peng
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Meiyang Song
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Henghui Song
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Yuhui Liu
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Peng Chen
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Shuang-Feng Yin
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, Hunan, China
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7
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Xie LF, Huang WH, Chen JP, Chen HL, Hou C, Ni QL, Huang TH, Gui LC, Wang XJ. Selective oxidation of β-keto ester modulated by the d-band centers in D-A conjugated microporous metallaphotoredox catalysts containing M-salen (MZn, Cu and Co) and triazine monomers. J Colloid Interface Sci 2024; 665:399-412. [PMID: 38537588 DOI: 10.1016/j.jcis.2024.03.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 03/21/2024] [Accepted: 03/22/2024] [Indexed: 04/17/2024]
Abstract
Photocatalytic selective oxidation plays an important role in developing green chemistry. However, it is challenging to design an efficient photocatalyst for controlling the selectivity of photocatalytic oxidation reaction and exploring its detailed mechanism. Here, we synthesized three conjugated microporous polymers (CMPs) with D-A structures, named M-SATE-CMPs (MZn, Cu and Co), with different d-band centers based on different metal centers, resulting in the discrepancy in adsorption and activation capacities for the reactants, which produces the selectivity of β-keto esters being catalyzed into α-hydroperoxide β-keto esters (ROOH) or to α-hydroxyl β-keto esters (ROH). Density functional theory (DFT) calculations also demonstrate that the adsorption and activation capacities of the metal active centers in M-SATE-CMPs (MZn, Cu and Co) for ROOH are the key factors to influence the photocatalytic selective oxidation of β-keto ester. This study provides a promising strategy for designing a metallaphotoredox catalyst whose photocatalytic selectivity depends on the d-band center of metal site in the catalyst.
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Affiliation(s)
- Lin-Fu Xie
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Wan-Hong Huang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jian-Ping Chen
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Hai-Lin Chen
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Cheng Hou
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Qing-Ling Ni
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Ting-Hong Huang
- School of Chemical Engineering, Sichuan University of Science & Engineering, Zigong 643000, China.
| | - Liu-Cheng Gui
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China; State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China.
| | - Xiu-Jian Wang
- School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China; Guangxi Key Laboratory of Low Carbon Energy Materials, Guangxi Normal University, Guilin 541004, China.
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8
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Huang Y, Shen M, Yan H, He Y, Xu J, Zhu F, Yang X, Ye YX, Ouyang G. Achieving a solar-to-chemical efficiency of 3.6% in ambient conditions by inhibiting interlayer charges transport. Nat Commun 2024; 15:5406. [PMID: 38926358 PMCID: PMC11208529 DOI: 10.1038/s41467-024-49373-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Efficiently converting solar energy into chemical energy remains a formidable challenge in artificial photosynthetic systems. To date, rarely has an artificial photosynthetic system operating in the open air surpassed the highest solar-to-biomass conversion efficiency (1%) observed in plants. In this study, we present a three-dimension polymeric photocatalyst achieving a solar-to-H2O2 conversion efficiency of 3.6% under ambient conditions, including real water, open air, and room temperature. The impressive performance is attributed to the efficient storage of electrons inside materials via expeditious intramolecular charge transfer, and the fast extraction of the stored electrons by O2 that can diffuse into the internal pores of the self-supporting three-dimensional material. This construction strategy suppresses the interlayer transfer of excitons, polarizers and carriers, effectively increases the utilization of internal excitons to 82%. This breakthrough provides a perspective to substantially enhance photocatalytic performance and bear substantial implications for sustainable energy generation and environmental remediation.
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Affiliation(s)
- Yuyan Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510275, China
| | - Minhui Shen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510275, China
| | - Huijie Yan
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University, Zhuhai, 519082, China
| | - Yingge He
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Jianqiao Xu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510275, China
| | - Fang Zhu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510275, China
| | - Xin Yang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China
| | - Yu-Xin Ye
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University, Zhuhai, 519082, China.
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, 519082, China.
| | - Gangfeng Ouyang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510275, China.
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University, Zhuhai, 519082, China.
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, 519082, China.
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9
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Lu CJ, Shi WJ, Gong YN, Zhang JH, Wang YC, Mei JH, Ge ZM, Lu TB, Zhong DC. Modulating the Microenvironments of Robust Metal Hydrogen-Bonded Organic Frameworks for Boosting Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2024:e202405451. [PMID: 39031893 DOI: 10.1002/anie.202405451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 05/29/2024] [Accepted: 06/19/2024] [Indexed: 07/22/2024]
Abstract
Hydrogen-bonded organic frameworks (HOFs) are outstanding candidates for photocatalytic hydrogen evolution. However, most of reported HOFs suffer from poor stability and photocatalytic activity in the absence of Pt cocatalyst. Herein, a series of metal HOFs (Co2-HOF-X, X=COOMe, Br, tBu and OMe) have been rationally constructed based on dinuclear cobalt complexes, which exhibit exceptional stability in the presence of strong acid (12 M HCl) and strong base (5 M NaOH) for at least 10 days. More impressively, by varying the -X groups of the dinuclear cobalt complexes, the microenvironment of Co2-HOF-X can be modulated, giving rise to obviously different photocatalytic H2 production rates, following the -X group sequence of -COOMe>-Br>-tBu>-OMe. The optimized Co2-HOF-COOMe shows H2 generation rate up to 12.8 mmol g-1 h-1 in the absence of any additional noble-metal photosensitizers and cocatalysts, which is superior to most reported Pt-assisted photocatalytic systems. Experiments and theoretical calculations reveal that the -X groups grafted on Co2-HOF-X possess different electron-withdrawing ability, thus regulating the electronic structures of Co catalytic centres and proton activation barrier for H2 production, and leading to the distinctly different photocatalytic activity.
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Affiliation(s)
- Chong-Jiu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Wen-Jie Shi
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Yun-Nan Gong
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Ji-Hong Zhang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Yu-Chen Wang
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Jian-Hua Mei
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Zhao-Ming Ge
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Tong-Bu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
| | - Di-Chang Zhong
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China
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10
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Lyons RJ, Sprick RS. Processing polymer photocatalysts for photocatalytic hydrogen evolution. MATERIALS HORIZONS 2024. [PMID: 38895815 DOI: 10.1039/d4mh00482e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Conjugated materials have emerged as competitive photocatalysts for the production of sustainable hydrogen from water over the last decade. Interest in these polymer photocatalysts stems from the relative ease to tune their electronic properties through molecular engineering, and their potentially low cost. However, most polymer photocatalysts have only been utilised in rudimentary suspension-based photocatalytic reactors, which are not scalable as these systems can suffer from significant optical losses and often require constant agitation to maintain the suspension. Here, we will explore research performed to utilise polymeric photocatalysts in more sophisticated systems, such as films or as nanoparticulate suspensions, which can enhance photocatalytic performance or act as a demonstration of how the polymer can be scaled for real-world applications. We will also discuss how the systems were prepared and consider both the benefits and drawbacks of each system before concluding with an outlook on the field of processable polymer photocatalysts.
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Affiliation(s)
- Richard Jack Lyons
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, Liverpool L7 3NY, UK
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11
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Zhou M, Wang H, Liu R, Liu Z, Xiao X, Li W, Gao C, Lu Z, Jiang Z, Shi W, Xiong Y. Construction of Frustrated Lewis Pairs in Poly(heptazine Imide) Nanosheets via Hydrogen Bonds for Boosting CO 2 Photoreduction. Angew Chem Int Ed Engl 2024:e202407468. [PMID: 38847274 DOI: 10.1002/anie.202407468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Indexed: 08/03/2024]
Abstract
The creation of frustrated Lewis pairs on catalyst surface is an effective strategy for tuning CO2 activation. The critical step in the formation of frustrated Lewis pairs is the spatial effect of proximal Lewis acid-Lewis base pairs. Here, we demonstrate a facile surface functionalization methodology that enables hydrogen bonding between N and H atoms to mediate the construction of frustrated Lewis pairs in poly(heptazine imide), thereby increasing the propensity to activate CO2 molecules. Experimental and theoretical results show that the construction of active hydrogen bonding regions can facilitate the bending of CO2 molecules. Furthermore, the delocalization of electron clouds induced by the hydrogen bonding-mediated frustrated Lewis pairs can promote the heterolytic cleavage and photocatalytic conversion of CO2. This work highlights the potential of utilizing hydrogen bonding-mediated strategy in heterogeneously photocatalytic activation of CO2 over polymer materials.
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Affiliation(s)
- Min Zhou
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P. R. China
| | - Haozhi Wang
- School of Materials Science and Engineering, Key Laboratory of Pico Electron Microscopy of Hainan Province, Hainan University, 570228, Haikou, Hainan, P. R. China
| | - Rong Liu
- Anhui Engineering Research Center of Carbon Neutrality, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, College of Chemistry and Materials Science, School of Physics and Electronic Information, Anhui Normal University, 241002, Wuhu, Anhui, P. R. China
| | - Zheyang Liu
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P. R. China
| | - Xinyan Xiao
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P. R. China
| | - Weilin Li
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P. R. China
| | - Chao Gao
- School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Zhou Lu
- Anhui Engineering Research Center of Carbon Neutrality, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, College of Chemistry and Materials Science, School of Physics and Electronic Information, Anhui Normal University, 241002, Wuhu, Anhui, P. R. China
| | - Zhifeng Jiang
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P. R. China
- School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
| | - Weidong Shi
- Institute for Energy Research, School of Chemistry and Chemical Engineering, Jiangsu University, 212013, Zhenjiang, Jiangsu, P. R. China
| | - Yujie Xiong
- Anhui Engineering Research Center of Carbon Neutrality, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, College of Chemistry and Materials Science, School of Physics and Electronic Information, Anhui Normal University, 241002, Wuhu, Anhui, P. R. China
- School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, 230026, Hefei, Anhui, P. R. China
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12
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Shu C, Yang X, Liu L, Hu X, Sun R, Yang X, Cooper AI, Tan B, Wang X. Mixed-Linker Strategy for the Construction of Sulfone-Containing D-A-A Covalent Organic Frameworks for Efficient Photocatalytic Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2024; 63:e202403926. [PMID: 38414401 DOI: 10.1002/anie.202403926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 02/27/2024] [Accepted: 02/27/2024] [Indexed: 02/29/2024]
Abstract
The solar-driven photocatalytic production of hydrogen peroxide (H2O2) from water and oxygen using semiconductor catalysts offers a promising approach for converting solar energy into storable chemical energy. However, the efficiency of photocatalytic H2O2 production is often restricted by the low photo-generated charge separation, slow surface reactions and inadequate stability. Here, we developed a mixed-linker strategy to build a donor-acceptor-acceptor (D-A-A) type covalent organic framework (COF) photocatalyst, FS-OHOMe-COF. The FS-OHOMe-COF structure features extended π-π conjugation that improves charge mobility, while the introduction of sulfone units not only as active sites facilitates surface reactions with water but also bolsters stability through increased interlayer forces. The resulting FS-OHOMe-COF has a low exciton binding energy, long excited-state lifetime and high photo-stability that leads to high performance for photocatalytic H2O2 production (up to 1.0 mM h-1) with an H2O2 output of 19 mM after 72 hours of irradiation. Furthermore, the catalyst demonstrates high stability, which sustained activity over 192 hours of photocatalytic experiment.
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Affiliation(s)
- Chang Shu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Xiaoju Yang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Lunjie Liu
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, United Kingdom
| | - Xunliang Hu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Ruixue Sun
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Xuan Yang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Andrew I Cooper
- Department of Chemistry and Materials Innovation Factory, University of Liverpool, 51 Oxford Street, Liverpool, L7 3NY, United Kingdom
| | - Bien Tan
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
| | - Xiaoyan Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China
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13
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Yu H, Zhang F, Chen Q, Zhou PK, Xing W, Wang S, Zhang G, Jiang Y, Chen X. Vinyl-Group-Anchored Covalent Organic Framework for Promoting the Photocatalytic Generation of Hydrogen Peroxide. Angew Chem Int Ed Engl 2024; 63:e202402297. [PMID: 38488772 DOI: 10.1002/anie.202402297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Indexed: 04/17/2024]
Abstract
The artificial photosynthesis of H2O2 from water and oxygen using semiconductor photocatalysts is attracting increasing levels of attention owing to its green, environmentally friendly, and energy-saving characteristics. Although covalent organic frameworks (COFs) are promising materials for promoting photocatalytic H2O2 production owing to their structural and functional diversity, they typically suffer from low charge-generation and -transfer efficiencies as well as rapid charge recombination, which restricts their use as catalysts for photocatalytic H2O2 production. Herein, we report a strategy for anchoring vinyl moieties to a COF skeleton to facilitate charge separation and migration, thereby promoting photocatalytic H2O2 generation. This vinyl-group-bearing COF photocatalyst exhibits a H2O2-production rate of 84.5 μmol h-1 (per 10 mg), which is ten-times higher than that of the analog devoid of vinyl functionality and superior to most reported COF photocatalysts. Both experimental and theoretical studies provide deep insight into the origin of the improved photocatalytic performance. These findings are expected to facilitate the rational design and modification of organic semiconductors for use in photocatalytic applications.
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Affiliation(s)
- Hong Yu
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Fengtao Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Qian Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Pan-Ke Zhou
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Wandong Xing
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Sibo Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Guigang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yi Jiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, P. R. China
| | - Xiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecular Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
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14
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Zhang W, Wang B, Cui H, Wan Q, Yi B, Yang H. Unveiling the exciton dissociation dynamics steered by built-in electric fields in conjugated microporous polymers for photoreduction of uranium (VI) from seawater. J Colloid Interface Sci 2024; 662:377-390. [PMID: 38359502 DOI: 10.1016/j.jcis.2024.02.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 02/05/2024] [Accepted: 02/06/2024] [Indexed: 02/17/2024]
Abstract
Developing highly efficient photocatalysts based on conjugated microporous polymers (CMPs) are often impeded by the intrinsically large exciton binding energy and sluggish charge transfer kinetics that result from their vulnerable driving force. Herein, a family of pyrene-based nitrogen-implanted CMPs were constructed, where the nitrogen gradient was regulated. Accordingly, the built-in electric field endowed by the nitrogen gradient dramatically accelerates the dissociation of exciton into free carriers, thereby enhancing charge separation efficiency. As a result, PyCMP-3N generated by polymerization of 1,3,6,8-tetrakis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrene and 2,4,6-tris(4-bromophenyl)-1,3,5-triazine featured an optimized built-in electric field and exhibited the highest photocatalytic removal efficiency of uranium (VI) (99.5 %). Our proposed strategy not only provides inspiration for constructing the built-in electric field by controlling nitrogen concentration gradients, but also offers an in-depth understanding the crucial role of built-in electric field in exciton dissociation and charge transfer, efficiently promoting CMPs photocatalysis.
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Affiliation(s)
- Weijie Zhang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Bingxin Wang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Haishuai Cui
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Quan Wan
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Bing Yi
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China
| | - Hai Yang
- Hunan Provincial Key Laboratory of Environmental Catalysis & Waste Recycling, College of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China.
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15
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Yan H, Peng Y, Huang Y, Shen M, Wei X, Zou W, Tong Q, Zhou N, Xu J, Zhang Y, Ye YX, Ouyang G. Enhancing Photosynthesis Efficiency of Hydrogen Peroxide by Modulating Side Chains to Facilitate Water Oxidation at Low-Energy Barrier Sites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311535. [PMID: 38278520 DOI: 10.1002/adma.202311535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/13/2024] [Indexed: 01/28/2024]
Abstract
Hydrogen peroxide (H2O2) is a crucial oxidant in advanced oxidation processes. In situ, photosynthesis of it in natural water holds the promise of practical application for water remediation. However, current photosynthesis of H2O2 systems primarily relies on oxygen reduction, leading to limited performance in natural water with low dissolved oxygen or anaerobic conditions found in polluted water. Herein, a novel photocatalyst based on conjugated polymers with alternating electron donor-acceptor structures and electron-withdrawing side chains on electron donors is introduced. Specifically, carbazole functions as the electron donor, triazine serves as the electron acceptor, and cyano acts as the electron-withdrawing side chain. Notably, the photocatalyst exhibits a remarkable solar-to-chemical conversion of 0.64%, the highest reported in natural water. Furthermore, even in anaerobic conditions, it achieves an impressive H2O2 photosynthetic efficiency of 1365 µmol g-1 h-1, surpassing all the reported photosynthetic systems of H2O2. This remarkable improvement is attributed to the effective relocation of the water oxidation active site from a high-energy carbazole to a low-energy acetylene site mediated by the side chains, resulting in enhanced O2 or H2O2 generation from water. This breakthrough offers a new avenue for efficient water remediation using advanced oxidation technologies in oxygen-limited environments, holding significant implications for environmental restoration.
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Affiliation(s)
- Huijie Yan
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China
| | - Yuan Peng
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China
| | - Yuyan Huang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Minhui Shen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Xiaoqian Wei
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing, 210023, China
| | - Weixin Zou
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing, 210023, China
| | - Qing Tong
- Center of Modern Analysis, Jiangsu Key Laboratory of Vehicle Emissions Control, Nanjing University, Nanjing, 210023, China
| | - Ningbo Zhou
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China
| | - Jianqiao Xu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yuxia Zhang
- Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials, School of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, 414006, China
| | - Yu-Xin Ye
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China
| | - Gangfeng Ouyang
- School of Chemical Engineering and Technology, IGCME, Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, School of Chemistry, IGCME, Sun Yat-Sen University, Guangzhou, 510275, China
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16
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Cao L, Wang C, Wang H, Xu X, Tao X, Tan H, Zhu G. Rationally Designed Cyclooctatetrathiophene-Based Porous Aromatic Frameworks (COTh-PAFs) for Efficient Photocatalytic Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2024; 63:e202402095. [PMID: 38450907 DOI: 10.1002/anie.202402095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/26/2024] [Accepted: 03/05/2024] [Indexed: 03/08/2024]
Abstract
Constructing stable and efficient photocatalysts for H2O2 production is of great importance and is challenging. In this study, the synthesis of three photoactive cyclooctatetrathiophene (COTh)-based porous aromatic frameworks (COTh-PAFs) in an alternating donor-acceptor (D-A) fashion is presented. In combination with a triazine-derived electron acceptor, PAF-363 exhibits high efficiency for the photosynthesis of H2O2 with production rates of 11733 μmol g-1 h-1(with sacrificial agent) and 3930 μmol g-1 h-1 (without sacrificial agent) from water and oxygen under visible light irradiation. Experimental results and theoretical calculations reveal that the charge transfer positions and the O2 adsorption sites in PAF-363 are both concentrated on COTh fragments, which facilitate the H2O2 production through the oxygen reduction reaction (ORR) pathway. This work highlights that the rational design of COTh-PAFs with consideration of D-A direction, charge transfer positions, and O2 adsorption sites provides a feasible access to efficient H2O2 production photocatalysts.
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Affiliation(s)
- Linzhu Cao
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Cong Wang
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun, 130022, China
| | - He Wang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Xinmeng Xu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Xin Tao
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Huaqiao Tan
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Guangshan Zhu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry Education, Faculty of Chemistry, Northeast Normal University, Changchun, 130024, China
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17
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Li S, Huber N, Huang W, Wei W, Landfester K, Ferguson CTJ, Zhao Y, Zhang KAI. Triazine Frameworks for the Photocatalytic Selective Oxidation of Toluene. Angew Chem Int Ed Engl 2024; 63:e202400101. [PMID: 38407424 DOI: 10.1002/anie.202400101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 01/19/2024] [Indexed: 02/27/2024]
Abstract
Investigations into the selective oxidation of inert sp3 C-H bonds using polymer photocatalysts under mild conditions have been limited. Additionally, the structure-activity relationship of photocatalysts often remains insufficiently explored. Here, a series of thiophene-based covalent triazine frameworks (CTFs) are used for the efficient and selective oxidation of hydrocarbons to aldehydes or ketones under ambient aerobic conditions. Spectroscopic methods conducted in situ and density functional theory (DFT) calculations revealed that the sulfur atoms within the thiophene units play a pivotal role as oxidation sites due to the generation of photogenerated holes. The effect of photogenerated holes on photocatalytic toluene oxidation was investigated by varying the length of the spacer in a CTF donor-acceptor based photocatalyst. Furthermore, the manipulation of reactive oxygen species was employed to enhance selectivity by weakening the peroxidative capacity. As an illustrative example, this study successfully demonstrated the synthesis of a precursor of the neurological drug AMG-579 using a photocatalytic protocol.
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Affiliation(s)
- Sizhe Li
- Department of Materials Science, Fudan University, 200433, Shanghai, P. R. China
| | - Niklas Huber
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Wei Huang
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
| | - Wenxin Wei
- Department of Materials Science, Fudan University, 200433, Shanghai, P. R. China
| | | | | | - Yan Zhao
- Department of Materials Science, Fudan University, 200433, Shanghai, P. R. China
| | - Kai A I Zhang
- Department of Materials Science, Fudan University, 200433, Shanghai, P. R. China
- Max Planck Institute for Polymer Research, 55128, Mainz, Germany
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18
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Qin Y, She P, Wang Y, Wong WY. An All-In-One Integrating Strategy for Designing Platinum(II)-Based Supramolecular Polymers for Photocatalytic Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2400259. [PMID: 38624171 DOI: 10.1002/smll.202400259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Revised: 04/06/2024] [Indexed: 04/17/2024]
Abstract
Organic polymer photocatalysts have achieved significant progress in photocatalytic hydrogen evolution, while developing the integrated organic polymers possessing the functions of photosensitizer, electron transfer mediator, and catalyst simultaneously is urgently needed and presents a great challenge. Considering that chalcogenoviologens are able to act as photosensitizers and electron-transfer mediators, a series of chalcogenoviologen-containing platinum(II)-based supramolecular polymers is designed, which exhibited strong visible light-absorbing ability and suitable bandgap for highly efficient photocatalytic hydrogen evolution without the use of a cocatalyst. The hydrogen evolution rate (HER) increases steadily with the decrease in an optical gap of the polymer. Among these "all-in-one" polymers, Se-containing 2D porous polymer exhibited the best photocatalytic performance with a HER of 3.09 mmol g-1 h-1 under visible light (>420 nm) irradiation. Experimental and theoretical calculations reveal that the distinct intramolecular charge transfer characteristics and heteroatom N in terpyridine unit promote charge separation and transfer within the molecules. This work could provide new insights into the design of metallo-supramolecular polymers with finely tuned components for photocatalytic hydrogen evolution from water.
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Affiliation(s)
- Yanyan Qin
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518057, P. R. China
| | - Pengfei She
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518057, P. R. China
| | - Yidi Wang
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518057, P. R. China
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology and Research Institute for Smart Energy, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, P. R. China
- The Hong Kong Polytechnic University, Shenzhen Research Institute, Shenzhen, 518057, P. R. China
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19
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Dey A, Pradhan J, Biswas S, Ahamed Rahimi F, Biswas K, Maji TK. COF-Topological Quantum Material Nano-heterostructure for CO 2 to Syngas Production under Visible Light. Angew Chem Int Ed Engl 2024; 63:e202315596. [PMID: 38400778 DOI: 10.1002/anie.202315596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 02/26/2024]
Abstract
Efficient solar-driven syngas production (CO+H2 mixture) from CO2 and H2O with a suitable photocatalyst and fundamental understanding of the reaction mechanism are the desired approach towards the carbon recycling process. Herein, we report the design and development of an unique COF-topological quantum material nano-heterostructure, COF@TI with a newly synthesized donor-acceptor based COF and two dimensional (2D) nanosheets of strong topological insulator (TI), PbBi2Te4. The intrinsic robust metallic surfaces of the TI act as electron reservoir, minimising the fast electron-hole recombination process, and the presence of 6s2 lone pairs in Pb2+ and Bi3+ in the TI helps for efficient CO2 binding, which are responsible for boosting overall catalytic activity. In variable ratio of acetonitrile-water (MeCN : H2O) solvent mixture COF@TI produces syngas with different ratios of CO and H2. COF@TI nano-heterostructure enables to produce higher amount of syngas with more controllable ratios of CO and H2 compared to pristine COF. The electron transfer route from COF to TI was realized from Kelvin probe force microscopy (KPFM) analysis, charge density difference calculation, excited state lifetime and photoelectrochemical measurements. Finally, a probable mechanistic pathway has been established after identifying the catalytic sites and reaction intermediates by in situ DRIFTS study and DFT calculation.
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Affiliation(s)
- Anupam Dey
- Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
| | - Jayita Pradhan
- New Chemistry Unit (NCU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
| | - Sandip Biswas
- Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
| | - Faruk Ahamed Rahimi
- Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
| | - Kanishka Biswas
- New Chemistry Unit (NCU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
| | - Tapas Kumar Maji
- Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
- New Chemistry Unit (NCU), School of Advanced Materials (SAMat), International Centre for Materials Science (ICMS), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), 560064, Jakkur, Bangalore, India
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20
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Wanasinghe S, Gjoni A, Burson W, Majeski C, Zaslona B, Rury AS. Motional Narrowing through Photonic Exchange: Rational Suppression of Excitonic Disorder from Molecular Cavity Polariton Formation. J Phys Chem Lett 2024; 15:2405-2418. [PMID: 38394364 PMCID: PMC10926155 DOI: 10.1021/acs.jpclett.3c03217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
Maximizing the coherence between the constituents of molecular materials remains a crucial goal toward the implementation of these systems into everyday optoelectronic technologies. Here we experimentally assess the ability of strong light-matter coupling in the collective limit to reduce energetic disorder using porphyrin-based chromophores in Fabry-Pérot (FP) microresonator structures. Following characterization of cavity polaritons formed from chemically distinct porphyrin dimers, we find that the peaks corresponding to the lower polariton (LP) state in each sample do not possess widths consistent with conventional theories. We model the behavior of the polariton peak widths effectively using the results of spectroscopic theory. We correlate differences in the suppression of excitonic energetic disorder between our samples with microscopic light-matter interactions and propose that the suppression stems from photonic exchange. Our results demonstrate that cavity polariton formation can suppress disorder and show researchers how to design coherence into hybrid molecular material systems.
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Affiliation(s)
- Sachithra
T. Wanasinghe
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
- Materials
Structural Dynamics Laboratory, Wayne State
University, Detroit, Michigan 48202, United
States
| | - Adelina Gjoni
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
- Materials
Structural Dynamics Laboratory, Wayne State
University, Detroit, Michigan 48202, United
States
| | - Wade Burson
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Caris Majeski
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Bradley Zaslona
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
| | - Aaron S. Rury
- Department
of Chemistry, Wayne State University, Detroit, Michigan 48202, United States
- Materials
Structural Dynamics Laboratory, Wayne State
University, Detroit, Michigan 48202, United
States
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21
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Ma D, Tang Z, Guan X, Liang Z, Liang Q, Jiao Y, Wang L, Ye L, Huang H, He C, Xia D. Unraveling Valence Electron Number Dependent Excitonic Effects over M 1-N 3C 1 Sites in Single-Atom Catalysts. ACS NANO 2024; 18:6579-6590. [PMID: 38353995 DOI: 10.1021/acsnano.3c12701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Excitonic effects significantly influence the selective generation of reactive oxygen species and photothermal conversion efficiency in photocatalytic reactions; however, the intrinsic factors governing excitonic effects remain elusive. Herein, a series of single-atom catalysts with well-defined M1-N3C1 (M = Mn, Fe, Co, and Ni) active sites are designed and synthesized to investigate the structure-activity relationship between photocatalytic materials and excitonic effects. Comprehensive characterization and theoretical calculations unveil that excitonic effects are positively correlated with the number of valence electrons in single metal atoms. The single Mn atom with 5.93 valence electrons exhibits the weakest excitonic effects, which dominate superoxide radical (O2•-) generation through charge transfer and enhance photothermal conversion efficiency. Conversely, the single Ni atom with 9.27 valence electrons exhibits the strongest excitonic effects, dominating singlet oxygen (1O2) generation via energy transfer while suppressing photothermal conversion efficiency. Based on the valence electron number dependent excitonic effects, a reaction environment with hyperthermia and abundant cytotoxic O2•- is designed, achieving efficient and stable water disinfection. This work reveals single metal atom dependent excitonic effects and presents an atomic-level methodology for catalytic application targeted reaction environment tailoring.
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Affiliation(s)
- Dingren Ma
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zhuoyun Tang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xinyi Guan
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Zhuocheng Liang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Qiwen Liang
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Yimu Jiao
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Li Wang
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Liqun Ye
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, People's Republic of China
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing 100083, People's Republic of China
| | - Chun He
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Dehua Xia
- School of Environmental Science and Engineering, Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
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22
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Cheng C, Yu J, Xu D, Wang L, Liang G, Zhang L, Jaroniec M. In-situ formatting donor-acceptor polymer with giant dipole moment and ultrafast exciton separation. Nat Commun 2024; 15:1313. [PMID: 38350993 PMCID: PMC10864376 DOI: 10.1038/s41467-024-45604-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/30/2024] [Indexed: 02/15/2024] Open
Abstract
Donor-acceptor semiconducting polymers present countless opportunities for application in photocatalysis. Previous studies have showcased their advantages through direct bottom-up methods. Unfortunately, these approaches often involve harsh reaction conditions, overlooking the impact of uncontrolled polymerization degrees on photocatalysis. Besides, the mechanism behind the separation of electron-hole pairs (excitons) in donor-acceptor polymers remains elusive. This study presents a post-synthetic method involving the light-induced transformation of the building blocks of hyper-cross-linked polymers from donor-carbon-donor to donor-carbon-acceptor states, resulting in a polymer with a substantial intramolecular dipole moment. Thus, excitons are efficiently separated in the transformed polymer. The utility of this strategy is exemplified by the enhanced photocatalytic hydrogen peroxide synthesis. Encouragingly, our observations reveal the formation of intramolecular charge transfer states using time-resolved techniques, confirming transient exciton behavior involving separation and relaxation. This light-induced method not only guides the development of highly efficient donor-acceptor polymer photocatalysts but also applies to various fields, including organic solar cells, light-emitting diodes, and sensors.
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Affiliation(s)
- Chang Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, P. R. China
| | - Jiaguo Yu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, 430070, Wuhan, P. R. China.
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China.
| | - Difa Xu
- Hunan Key Laboratory of Applied Environmental Photocatalysis, Changsha University, 98 Hongshan Road, Changsha, 410022, P.R. China
| | - Lei Wang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices, Hubei University of Arts and Science, Xiangyang, 441053, P. R. China
| | - Guijie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Material and Devices, Hubei University of Arts and Science, Xiangyang, 441053, P. R. China
| | - Liuyang Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China.
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry, Kent State University, Kent, OH, 44242, USA.
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23
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Huang TF, Liu JJ, Lai ZY, Chang JW, Zhuang YR, Jiang ZC, Chang CL, Lin WC, Chen YH, Wu YH, Sun YE, Luo TA, Chen YK, Yen JC, Hsu HK, Chen BH, Ting LY, Lu CY, Lin YT, Hsu LY, Wu TL, Yang SD, Su AC, Jeng US, Chou HH. Performance and Solution Structures of Side-Chain-Bridged Oligo (Ethylene Glycol) Polymer Photocatalysts for Enhanced Hydrogen Evolution under Natural Light Illumination. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2304743. [PMID: 37803930 DOI: 10.1002/smll.202304743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/16/2023] [Indexed: 10/08/2023]
Abstract
Converting solar energy into hydrogen energy using conjugated polymers (CP) is a promising solution to the energy crisis. Improving water solubility plays one of the critical factors in enhancing the hydrogen evolution rate (HER) of CP photocatalysts. In this study, a novel concept of incorporating hydrophilic side chains to connect the backbones of CPs to improve their HER is proposed. This concept is realized through the polymerization of carbazole units bridged with octane, ethylene glycol, and penta-(ethylene glycol) to form three new side-chain-braided (SCB) CPs: PCz2S-OCt, PCz2S-EG, and PCz2S-PEG. Verified through transient absorption spectra, the enhanced capability of PCz2S-PEG for ultrafast electron transfer and reduced recombination effects has been demonstrated. Small- and wide-angle X-ray scattering (SAXS/WAXS) analyses reveal that these three SCB-CPs form cross-linking networks with different mass fractal dimensions (f) in aqueous solution. With the lowest f value of 2.64 and improved water/polymer interfaces, PCz2S-PEG demonstrates the best HER, reaching up to 126.9 µmol h-1 in pure water-based photocatalytic solution. Moreover, PCz2S-PEG exhibits comparable performance in seawater-based photocatalytic solution under natural sunlight. In situ SAXS analysis further reveals nucleation-dominated generation of hydrogen nanoclusters with a size of ≈1.5 nm in the HER of PCz2S-PEG under light illumination.
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Affiliation(s)
- Tse-Fu Huang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Jia-Jen Liu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Ze-Yu Lai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Je-Wei Chang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Ying-Rang Zhuang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Zi-Cheng Jiang
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Chih-Li Chang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Wei-Cheng Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yan-Heng Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yi-Hsiang Wu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yu-En Sun
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Ting-An Luo
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yi-Kuan Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Jui-Chen Yen
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Hung-Kai Hsu
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Bo-Han Chen
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Li-Yu Ting
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Chia-Yeh Lu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Yu-Tung Lin
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Ling-Yu Hsu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Tien-Lin Wu
- Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Shang-Da Yang
- Institute of Photonics Technologies & Department of Electrical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - An-Chung Su
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - U-Ser Jeng
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
- College of Semiconductor Research, National Tsing Hua University, Hsinchu, 300044, Taiwan
| | - Ho-Hsiu Chou
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300044, Taiwan
- College of Semiconductor Research, National Tsing Hua University, Hsinchu, 300044, Taiwan
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24
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Xing F, Liu S, Li J, Wang C, Jin S, Jin H, Li J. Modulate the Strong Exciton Effect by Na + Coordination-Induced Trap States: Efficient Photocatalytic H 2O 2 Production. ACS APPLIED MATERIALS & INTERFACES 2024; 16:860-868. [PMID: 38151338 DOI: 10.1021/acsami.3c16110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
Due to the strong Coulomb interaction, in most polymer photocatalysts, electron-hole pairs exist in the form of excitons rather than free charge carriers. The giant excitonic effect is a key obstacle to generating free charge carriers. Therefore, effectively regulating the exciton effect is the first step to achieving optimized carrier separation. Here, we used C-ring/g-C3N4 as the prototypical model system to design a photocatalyst with a Na-coordination-induced trap state. We demonstrate that the excitons can be effectively dissociated into charge carriers by combining with the trap state formed by Na doping sites. Encouragingly, signals from the dissociation of excitons into carriers were observed by ultrafast transient spectroscopy. Benefiting from the enhanced exciton dissociation, Na-C/CN displayed a H2O2 production rate of 17.4 mmol·L-1·h-1 with an apparent quantum efficiency up to 26.9% at 380 nm, which is much higher than many other g-C3N4-based photocatalysts. This work explains the effect of cation doping on the exciton-carrier behavior in polymers. Also, it provides a new way to regulate the exciton effect.
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Affiliation(s)
- Fangyuan Xing
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Shiqiao Liu
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Junyan Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Chengzhi Wang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Shaohua Jin
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Haibo Jin
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Jingbo Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
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25
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Yuan X, Yang K, Grazon C, Wang C, Vallan L, Isasa JD, Resende PM, Li F, Brochon C, Remita H, Hadziioannou G, Cloutet E, Li J. Tuning the Aggregates of Thiophene-based Trimers by Methyl Side-chain Engineering for Photocatalytic Hydrogen Evolution. Angew Chem Int Ed Engl 2024; 63:e202315333. [PMID: 37994609 DOI: 10.1002/anie.202315333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/08/2023] [Accepted: 11/20/2023] [Indexed: 11/24/2023]
Abstract
Organic π-conjugated semiconductors (OCSs) have recently emerged as a promising alternative to traditional inorganic materials for photocatalysis. However, the aggregation of OCSs in photocatalytic aqueous solution caused by self-assembly, which closely relates to the photocatalytic activity, has not yet been studied. Here, the relationship between the aggregation of 4,7-Bis(thiophen-2-yl) benzothiadiazole (TBT) and the photocatalytic activity was systematically investigated by introducing and varying the position of methyl side chains on the two peripheral thiophene units. Experimental and theoretical results indicated that the introduction of -CH3 group at the 3-position of TBT resulted in the smallest size and best crystallinity of aggregates compared to that of TBT, 4- and 5-positions. As a result, TBT-3 exhibited an excellent photocatalytic activity towards H2 evolution, ascribed to the shorten charge carrier transport distance and solid long-range order. These results suggest the important role of aggregation behavior of OCSs for efficient photocatalysis.
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Affiliation(s)
- Xiaojiao Yuan
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Kunran Yang
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Chloé Grazon
- Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33400, Talence, France
| | - Cong Wang
- Institut de Chimie Physique, UMR 8000 CNRS, Université Paris-Saclay, 310 Rue Michel Magat, 91400, Orsay, France
| | - Lorenzo Vallan
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Jean-David Isasa
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Pedro M Resende
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Fanxing Li
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, NC 27695-7905, USA
| | - Cyril Brochon
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Hynd Remita
- Institut de Chimie Physique, UMR 8000 CNRS, Université Paris-Saclay, 310 Rue Michel Magat, 91400, Orsay, France
| | - Georges Hadziioannou
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Eric Cloutet
- Université de Bordeaux, CNRS, Bordeaux INP, LCPO, UMR5629, Allée Geoffroy Saint Hilaire, Bâtiment B8, 33607, Pessac, France
| | - Jian Li
- Institut de Chimie Physique, UMR 8000 CNRS, Université Paris-Saclay, 310 Rue Michel Magat, 91400, Orsay, France
- Laboratory of Renewable Energy Science and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Switzerland
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26
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Sugie A, Nakano K, Tajima K, Osaka I, Yoshida H. Dependence of Exciton Binding Energy on Bandgap of Organic Semiconductors. J Phys Chem Lett 2023; 14:11412-11420. [PMID: 38081594 PMCID: PMC10749482 DOI: 10.1021/acs.jpclett.3c02863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 12/22/2023]
Abstract
Strongly bound excitons crucially affect the operation of organic optoelectronic devices. Nevertheless, precise experimental data on the exciton binding energy of organic semiconductors are lacking. In this study, we determine the exciton binding energy as the difference between the optical and transport bandgaps with a precision of 0.1 eV. In particular, electron affinities with a precision higher than 0.05 eV determined by low-energy inverse photoelectron spectroscopy allow us to determine the transport gap and the exciton binding energies with such high precision. Through a systematic comparison of a wide range of organic semiconductors, including 42 organic solar cell materials (15 nonfullerene acceptors, 4 fullerene acceptors, 13 low-bandgap polymers, 7 organic light-emitting diode materials, and 3 crystalline materials), we found that the exciton binding energy is one-quarter of the transport gap regardless of the materials. We interpret this unexpected relation from a hydrogen atom-like model, i.e., the quantized energy levels in a Coulomb potential between the positive and the negative charges.
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Affiliation(s)
- Ai Sugie
- Graduate
School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kyohei Nakano
- RIKEN
Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Keisuke Tajima
- RIKEN
Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Itaru Osaka
- Applied
Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Hiroyuki Yoshida
- Graduate
School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
- Molecular
Chirality Research Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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27
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Wu Y, Deng X, Cui R, Song M, Guo X, Gong X, He J, Chen P. Electronic configuration inversion in CdIn 2S 4 for efficient photocatalytic hydrogen peroxide generation coupled with selective benzylamine oxidation. J Colloid Interface Sci 2023; 656:528-537. [PMID: 38007944 DOI: 10.1016/j.jcis.2023.11.118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 11/01/2023] [Accepted: 11/18/2023] [Indexed: 11/28/2023]
Abstract
Vacancies engineering has sparked a huge interest in enhancing photocatalytic activity, but monovacancy simultaneously conducts as either electron or hole acceptor and redox reaction, worsening charge transfer and catalytic performance. Here, the concept of electronic inversion has been proposed through the simultaneous introduction of surface oxygen and S vacancies in CdIn2S4 (OSv-CIS). Consequently, under mild conditions, the well-designed OSv-CIS-200 demonstrated a strong rate of N-benzylidenebenzylamine production (2972.07 µmol g-1 h-1) coupled with Hydrogen peroxide (H2O2) synthesis (2362.33 µmol g-1 h-1) (PIH), which is 12.4 times higher than that of CdIn2S4. Density functional theory (DFT) simulation and characterization studies demonstrate that oxygen is introduced into the lattice on the surface of the material, reversing the charge distribution of the S vacancy and enhancing the polarity of the total charge distribution. It not only provides a huge built-in electric field (BEF) for guiding the orientation of the charge transfer, but also acts as a long-distance active site to accelerate reaction and prevent H2O2 decomposition. Our work offers a straightforward connection between the atomic defect and intrinsic properties for designing high-efficiency materials.
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Affiliation(s)
- Yubo Wu
- College of Big Data and Information Engineering, State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, Guizhou, China; Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, State Key Laboratory of Public Big Data, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Xiaoxu Deng
- College of Big Data and Information Engineering, State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, Guizhou, China
| | - Ruirui Cui
- College of Big Data and Information Engineering, State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, Guizhou, China.
| | - Meiyang Song
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, State Key Laboratory of Public Big Data, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China
| | - Xiang Guo
- College of Big Data and Information Engineering, State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, Guizhou, China.
| | - Xingyong Gong
- College of Big Data and Information Engineering, State Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, Guizhou, China
| | - Jie He
- Key Laboratory of Catalysis and Energy Materials, Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science, South-Central Minzu University, Wuhan, 430074, China.
| | - Peng Chen
- Provincial Guizhou Key Laboratory of Green Chemical and Clean Energy Technology, State Key Laboratory of Public Big Data, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou, China.
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28
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Zou L, Chen ZA, Si DH, Yang SL, Gao WQ, Wang K, Huang YB, Cao R. Boosting CO 2 Photoreduction via Regulating Charge Transfer Ability in a One-Dimensional Covalent Organic Framework. Angew Chem Int Ed Engl 2023; 62:e202309820. [PMID: 37768737 DOI: 10.1002/anie.202309820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/28/2023] [Accepted: 09/28/2023] [Indexed: 09/29/2023]
Abstract
Two-dimensional (2D) imine-based covalent organic frameworks (COFs) hold potential for photocatalytic CO2 reduction. However, high energy barrier of imine linkage impede the in-plane photoelectron transfer process, resulting in inadequate efficiency of CO2 photoreduction. Herein, we present a dimensionality induced local electronic modulation strategy through the construction of one-dimensional (1D) pyrene-based covalent organic frameworks (PyTTA-COF). The dual-chain-like edge architectures of 1D PyTTA-COF enable the stabilization of aromatic backbones, thus reducing energy loss during exciton dissociation and thermal relaxation, which provides energetic photoelectron to traverse the energy barrier of imine linkages. As a result, the 1D PyTTA-COF exhibits significantly enhanced CO2 photoreduction activity under visible-light irradiation when coordinated with metal cobalt ion, yielding a remarkable CO evolution of 1003 μmol g-1 over an 8-hour period, which surpasses that of the corresponding 2D counterpart by a factor of 59. These findings present a valuable approach to address in-plane charge transfer limitations in imine-based COFs.
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Affiliation(s)
- Lei Zou
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002, Fujian, Fuzhou, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, 350108, Fuzhou, Fujian, P. R. China
| | - Zi-Ao Chen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002, Fujian, Fuzhou, P. R. China
- University of Chinese Academy of Sciences, 100049, Beijing, P. R. China
| | - Duan-Hui Si
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002, Fujian, Fuzhou, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, 350108, Fuzhou, Fujian, P. R. China
| | - Shuai-Long Yang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002, Fujian, Fuzhou, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, 350108, Fuzhou, Fujian, P. R. China
| | - Wen-Qiang Gao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, P. R. China
| | - Kai Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, P. R. China
| | - Yuan-Biao Huang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002, Fujian, Fuzhou, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, 350108, Fuzhou, Fujian, P. R. China
- University of Chinese Academy of Sciences, 100049, Beijing, P. R. China
| | - Rong Cao
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 350002, Fujian, Fuzhou, P. R. China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, 350108, Fuzhou, Fujian, P. R. China
- University of Chinese Academy of Sciences, 100049, Beijing, P. R. China
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29
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Yang H, Jia L, Zhang Q, Yuan S, Ohno T, Xu B. Efficient Exciton Dissociation on Ceria Chelated Cerium-Based MOF Isogenous S-Scheme Photocatalyst for Acetaldehyde Purification. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2308743. [PMID: 37948424 DOI: 10.1002/smll.202308743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/27/2023] [Indexed: 11/12/2023]
Abstract
Long-term exposure to low concentration indoor VOCs of acetaldehyde (CH3 CHO) is harmful to human health. Thus, a novel isogenous heterojunction CeO2 /Ce-MOF photocatalyst is synthesized via a one-step hydrothermal method for the effective elimination of CH3 CHO in this work. This CeO2 /Ce-MOF photocatalyst performs well in CH3 CHO removal and achieves an apparent quantum efficiency of 7.15% at 420 nm, which presents ≈6.7 and 3.4 times superior to those generated by CeO2 and Ce-MOF, respectively. The enhanced efficiency is due to two main aspects including i) an effective photocarrier separation ability and the prolonged reaction lifetime of excitons play crucial roles and ii) the formation of an internal electric field (IEF) is sufficient to overcome the considerable exciton binding energy, and increases the exciton dissociation efficiency by up to 50.4%. Moreover, the reasonable pathways and mechanisms of CH3 CHO degradation are determined by in situ DRIFTS analysis and simulated DFT calculations. Those results demonstrated that S-scheme heterojunction successfully increases the efficiency of harmful volatile organic compounds elimination, and it offers essential guidance for designing rare earth-based MOF photocatalysts.
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Affiliation(s)
- Hui Yang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
- College of Environmental Science and Engineering, Yangzhou University, Yangzhou, 225127, China
| | - Lu Jia
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
| | - Qitao Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, China
| | - Saisai Yuan
- School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212000, China
| | - Teruhisa Ohno
- Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu, 804-8550, Japan
| | - Bin Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
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30
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Yang S, Chen Z, Zou L, Cao R. Construction of Thiadiazole-Linked Covalent Organic Frameworks via Facile Linkage Conversion with Superior Photocatalytic Properties. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304697. [PMID: 37730952 PMCID: PMC10625113 DOI: 10.1002/advs.202304697] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Indexed: 09/22/2023]
Abstract
The establishment of facile synthetic routes to engineer covalent organic frameworks (COFs) with fully conjugated structure and excellent stability is highly desired for practical applications in optoelectronics and photocatalysis. Herein, a novel linkage conversion strategy is reported to prepare crystalline thiadiazole-linked COFs via thionation, cyclization, and oxidation of N-acylhydrazole bonds with Lawesson's reagent (LR). The as-prepared thiadiazole-linked COFs not only remain porosity and crystallinity, but enhance its chemical stability. Furthermore, thiadiazole-linked COFs are more favorable to lower exciton binding energy and promote π-electron delocalization over the whole reticular framework than N-acylhydrazone-linked COFs. Notably, the extended π-conjugation structure and decent crystallinity of the resulting TDA-COF are reflected by its higher photocatalytic H2 evolution rate (61.3 mmol g-1 in 5 h) in comparison with that (7.5 mmol g-1 ) of NAH-COF.
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Affiliation(s)
- Shuailong Yang
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of Matter, Chinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Ziao Chen
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of Matter, Chinese Academy of SciencesFuzhouFujian350002China
| | - Lei Zou
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of Matter, Chinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Rong Cao
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of Matter, Chinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
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31
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Zhang Y, Cao Q, Meng A, Wu X, Xiao Y, Su C, Zhang Q. Molecular Heptazine-Triazine Junction over Carbon Nitride Frameworks for Artificial Photosynthesis of Hydrogen Peroxide. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2306831. [PMID: 37775094 DOI: 10.1002/adma.202306831] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 09/15/2023] [Indexed: 10/01/2023]
Abstract
Revealing the photocatalytic mechanism between various junctions and catalytic activities has become a hotspot in photocatalytic systems. Herein, an internal molecular heptazine/triazine (H/T) junction in crystalline carbon nitride (HTCN) is constructed and devoted to selective two-electron oxygen reduction reaction (2e- ORR) for efficient hydrogen peroxide (H2 O2 ) production. In-situ X-ray diffraction spectra under various temperatures authenticate the successful formation of molecular H/T junction in HTCN during the calcining process rather than physically mixing. The increased surface photovoltage and transient photovoltage signals, and the decreased exciton binding energy undoubtably elucidate that an obvious increasement of carrier density and diffusion capability of photogenerated electrons are realized over HTCN. Additionally, the analyses of in situ photoirradiated Kelvin probe force microscopy and femto-second transient absorption spectra reveal the successful construction of the strong internal built-in-electric field and the existence of the majority of long-lived shallow trapped electrons associated with molecular H/T junction over HTCN, respectively. Benefiting from these, the photocatalytic results exhibit an incredible improvement (96.5-fold) for H2 O2 production. This novel work provides a comprehensive understanding of the long-lived reactive charges in molecular H/T junctions for strengthening the driving-force for photocatalytic H2 O2 production, which opens potential applications for enhancing PCN-based photocatalytic redox reactions.
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Affiliation(s)
- Yunxiao Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
- College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528300, P. R. China
| | - Qingxiang Cao
- College of Light Chemical Industry and Materials Engineering, Shunde Polytechnic, Foshan, 528300, P. R. China
| | - Aiyun Meng
- College of New Materials and New Energies, Shenzhen Technology University, Shenzhen, 518118, P. R. China
| | - Xuelian Wu
- College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Yonghao Xiao
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Chenliang Su
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
| | - Qitao Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen, 518060, P. R. China
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32
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Wang S, Xie Z, Zhu D, Fu S, Wu Y, Yu H, Lu C, Zhou P, Bonn M, Wang HI, Liao Q, Xu H, Chen X, Gu C. Efficient photocatalytic production of hydrogen peroxide using dispersible and photoactive porous polymers. Nat Commun 2023; 14:6891. [PMID: 37898686 PMCID: PMC10613291 DOI: 10.1038/s41467-023-42720-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 10/19/2023] [Indexed: 10/30/2023] Open
Abstract
Developing efficient artificial photocatalysts for the biomimetic photocatalytic production of molecular materials, including medicines and clean energy carriers, remains a fundamentally and technologically essential challenge. Hydrogen peroxide is widely used in chemical synthesis, medical disinfection, and clean energy. However, the current industrial production, predominantly by anthraquinone oxidation, suffers from hefty energy penalties and toxic byproducts. Herein, we report the efficient photocatalytic production of hydrogen peroxide by protonation-induced dispersible porous polymers with good charge-carrier transport properties. Significant photocatalytic hydrogen peroxide generation occurs under ambient conditions at an unprecedented rate of 23.7 mmol g-1 h-1 and an apparent quantum efficiency of 11.3% at 450 nm. Combined simulations and spectroscopies indicate that sub-picosecond ultrafast electron "localization" from both free carriers and exciton states at the catalytic reaction centers underlie the remarkable photocatalytic performance of the dispersible porous polymers.
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Affiliation(s)
- Shengdong Wang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, People's Republic of China
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, 510640, Guangzhou, People's Republic of China
| | - Zhipeng Xie
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350116, Fuzhou, People's Republic of China
| | - Da Zhu
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Shuai Fu
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55122, Mainz, Germany
| | - Yishi Wu
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, 100048, Beijing, People's Republic of China
| | - Hongling Yu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350116, Fuzhou, People's Republic of China
| | - Chuangye Lu
- State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, 510640, Guangzhou, People's Republic of China
| | - Panke Zhou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350116, Fuzhou, People's Republic of China
| | - Mischa Bonn
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55122, Mainz, Germany
| | - Hai I Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55122, Mainz, Germany
- Nanophotonics, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 1, 3584 CC, Utrecht, The Netherlands
| | - Qing Liao
- Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, 100048, Beijing, People's Republic of China
| | - Hong Xu
- Institute of Nuclear and New Energy Technology, Tsinghua University, 100084, Beijing, People's Republic of China
| | - Xiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350116, Fuzhou, People's Republic of China.
| | - Cheng Gu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, 610065, Chengdu, People's Republic of China.
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33
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Qin N, Mao A, Li L, Lin C, Zhai L, Liu J, Zou J, Cui CX, Mi L. Rational Design of Vinylene-Linked Covalent Organic Frameworks for Modulating Photocatalytic H 2 Evolution. CHEMSUSCHEM 2023; 16:e202300872. [PMID: 37466030 DOI: 10.1002/cssc.202300872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 07/20/2023]
Abstract
Vinylene-linked covalent organic frameworks (COFs) have attracted enormous attention for photocatalytic H2 evolution from water because of their fully conjugated structures, high chemical stabilities, and enhanced charge-carrier mobilities. In this work, two novel vinylene-linked COFs with tuned cyano contents were successfully synthesized and then employed as photocatalysts for H2 generation. Notably, the photocatalytic H2 production rate of the COF with the higher cyano content reached 73 μmol h-1 under visible light irradiation, which is 2.4 times higher than that with the lower content (30 μmol h-1 ). Both the experimental and computational results demonstrated that the rational design incorporating cyano groups into COF skeletons could precisely tune the corresponding energy levels, expand the visible-light absorption, and improve the photoinduced charge separation. This work not only provides a simple method for modulating the photocatalytic activities of COFs at the molecular level, but also affords interesting insights into the relationship between their structures and photocatalytic performance.
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Affiliation(s)
- Na Qin
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
| | - Aojie Mao
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
| | - Linqiang Li
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
| | - Chao Lin
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
| | - Lipeng Zhai
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
| | - Jing Liu
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
| | - Junhua Zou
- Institute of Energy Research, Jiangxi Academy of Sciences, Nanchang, 330029, P.R. China
| | - Cheng-Xing Cui
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, 453003, P. R. China
| | - Liwei Mi
- Henan Key Laboratory of Functional Salt Materials, Center for Advanced Materials Research, Zhongyuan University of Technology, Zhengzhou, 450007, P. R. China
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34
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Wang B, Wang X, Wang B, Dong CL, Huang YC, Yang M, Liu Y, Zhu Y, Long X, Yang D, Xia Y. Tuning Electronic State and Charge Transport in B←N-Containing 2D Polymer Heterostructures with Efficient Photocatalytic Performance. SMALL METHODS 2023; 7:e2300409. [PMID: 37317015 DOI: 10.1002/smtd.202300409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/14/2023] [Indexed: 06/16/2023]
Abstract
Linear-conjugated polymers (LCPs) are excellent semiconductor photocatalysts. However, its inherent amorphous structures and simple electron transport channels restrict efficient photoexcited charge separation and transfer. Herein, "2D conjugated engineering" is employed to design high-crystalline polymer photocatalysts with multichannel charge transport by introducing alkoxyphenyl sidechains. The electronic state structure and electron transport pathways of the LCPs are investigated using experimental and theoretical calculations. Consequently, the 2D B←N-containing polymers (2DPBN) exhibit excellent photoelectric characteristics, which enable the efficient separation of electron-hole and rapidly transfer photogenerated carriers to the catalyst surface for efficient catalytic reactions. Significantly, the further hydrogen evolution of 2DPBN-4F heterostructures can be achieved by increasing the fluorine content of the backbones. This study highlights that the rational design of LCP photocatalysts is an effective strategy to spur further interest in photofunctional polymer material applications.
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Affiliation(s)
- Binbin Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiao Wang
- State Key Laboratory of Marine Coatings, Marine Chemical Research Institute Co., Ltd., Qingdao, 266071, P. R. China
| | - Bingbing Wang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Chung-Li Dong
- Department of Physics, Tamkang University, Tamsui, 25137, Taiwan
| | - Yu-Cheng Huang
- Department of Physics, Tamkang University, Tamsui, 25137, Taiwan
| | - Mengfei Yang
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yiming Liu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, P. R. China
| | - Yukun Zhu
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Xiaojing Long
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Dongjiang Yang
- School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Yanzhi Xia
- State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center of Shandong Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
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35
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Ru C, Wang Y, Chen P, Zhang Y, Wu X, Gong C, Zhao H, Wu J, Pan X. Replacing CC Unit with B←N Unit in Isoelectronic Conjugated Polymers for Enhanced Photocatalytic Hydrogen Evolution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2302384. [PMID: 37116108 DOI: 10.1002/smll.202302384] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Three linear isoelectronic conjugated polymers PCC, PBC, and PBN are synthesized by Suzuki-Miyaura polycondensation for photocatalytic hydrogen (H2 ) production from water. PBN presented an excellent photocatalytic hydrogen evolution rate (HER) of 223.5 µmol h-1 (AQY420 = 23.3%) under visible light irradiation, which is 7 times that of PBC and 31 times that of PCC. The enhanced photocatalytic activity of PBN is due to the improved charge separation and transport of photo-induced electrons/holes originating from the lower exciton binding energy (Eb ), longer fluorescence lifetime, and stronger built-in electric field, caused by the introduction of the polar B←N unit into the polymer backbone. Moreover, the extension of the visible light absorption region and the enhancement of surface catalytic ability further increase the activity of PBN. This work reveals the potential of B←N fused structures as building blocks as well as proposes a rational design strategy for achieving high photocatalytic performance.
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Affiliation(s)
- Chenglong Ru
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yue Wang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Peiyan Chen
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yahui Zhang
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xuan Wu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Chenliang Gong
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Hao Zhao
- School of Physics and Electronic Information, Yantai University, 30 Qingquan Road, Yantai, 264005, China
| | - Jincai Wu
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiaobo Pan
- Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Lanzhou University, Lanzhou, 730000, P. R. China
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36
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Wang C, Xiao H, Lu Y, Lv J, Yuan Z, Cheng J. Regulation of Polymerization Kinetics to Improve Crystallinity of Carbon Nitride for Photocatalytic Reactions. CHEMSUSCHEM 2023; 16:e202300361. [PMID: 37139577 DOI: 10.1002/cssc.202300361] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/05/2023]
Abstract
Carbon nitride (CN) polymers exhibit tunable and fascinating physicochemical properties and are thus an essential class of photocatalytic materials with potential applications. Although significant progress has been made in the fabrication of CN, the preparation of metal-free crystalline CN via a straightforward method remains a considerable challenge. Herein, we describe a new attempt to synthesize crystalline carbon nitride (CCN) with a well-developed structure through regulation of the polymerization kinetics. The synthetic process involves the pre-polymerization of melamine to remove most of the ammonia and further calcination of the pre-heated melamine in the presence of copper oxide as an ammonia absorbent. Copper oxide can decompose the ammonia produced by the polymerization process, thereby promoting the reaction. These conditions facilitate the polycondensation process while avoiding carbonization of the polymeric backbone at high temperatures. Owing to the high crystallinity, nanosheet structure, and efficient charge-carrier transmission capacity, the as-prepared CCN catalyst shows much higher photocatalytic activity than its counterparts. Our study provides a novel strategy for the rational design and synthesis of high-performance carbon nitride photocatalysts by simultaneously optimizing polymerization kinetics and crystallographic structures.
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Affiliation(s)
- Chong Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, 35002, P. R. China
| | - Hongxiang Xiao
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Yichun Lu
- School of Energy and Environment, City University of Hong Kong, Kowloon Tong, Hong Kong SAR, P. R. China
| | - Jinliang Lv
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
| | - Zhanhui Yuan
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, 35002, P. R. China
| | - Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou, 350116, P. R. China
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37
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He T, Zhang Y, Zhang H, Zhao J, Shi H, Yang H, Yang P. Aggregation-Induced Structural Symmetry Breaking Promotes Charge Separation for Efficient Photocatalytic Hydrogen Production. CHEMSUSCHEM 2023; 16:e202300500. [PMID: 37078981 DOI: 10.1002/cssc.202300500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 04/20/2023] [Indexed: 05/03/2023]
Abstract
Recently, organic semiconductors have received much attention in the field of photocatalysis due to their tunable physicochemical properties. However, organic semiconductor photocatalysts typically suffer from severe charge recombination due to high exciton binding energy. Herein, we found that aggregation of pyrene results in a red-shift of the light absorption from UV to visible light region. Importantly, the aggregation can induce dipole polarization by spontaneous structural symmetry breaking, thus significantly accelerating the separation and transfer of charge carriers. As a result, the pyrene aggregates display enhanced hydrogen photosynthesis activity. Furthermore, the noncovalent interactions allow rational design of physicochemical and electronic properties of pyrene aggregates, further strengthening the charge separation and photocatalytic activity of aggregates. The quantum yield of pyrene aggregates for hydrogen production highly reaches 20.77 % at 400 nm. Moreover, we have also observed pyrene analogues (1-hydroxypyrene, 1-nitropyrene and perylene) after aggregation all display large dipole moments induced by structural symmetry breaking and therefore accelerate the separation of charge carriers, confirming its general principle. This work highlights the achievement of using aggregation-induced structural symmetry breaking to enable the separation and transfer of charge carriers.
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Affiliation(s)
- Tian He
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
| | - Ya Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
| | - Hongxia Zhang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
| | - Jianghong Zhao
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
| | - Hu Shi
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
- Institute of Molecular Science, Shanxi University, Taiyuan, 030006, P. R. China
| | - Hengquan Yang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
| | - Pengju Yang
- School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, 030006, P. R. China
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38
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Xia Y, Zhu B, Li L, Ho W, Wu J, Chen H, Yu J. Single-Atom Engineering of Covalent Organic Framework for Photocatalytic H 2 Production Coupled with Benzylamine Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301928. [PMID: 37104825 DOI: 10.1002/smll.202301928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 03/27/2023] [Indexed: 06/19/2023]
Abstract
In photocatalysis, reducing the exciton binding energy and boosting the conversion of excitons into free charge carriers are vital to enhance photocatalytic activity. This work presents a facile strategy of engineering Pt single atoms on a 2D hydrazone-based covalent organic framework (TCOF) to promote H2 production coupled with selective oxidation of benzylamine. The optimised TCOF-Pt SA photocatalyst with 3 wt% Pt single atom exhibited superior performance to TCOF and TCOF-supported Pt nanoparticle catalysts. The production rates of H2 and N-benzylidenebenzylamine over TCOF-Pt SA3 are 12.6 and 10.9 times higher than those over TCOF, respectively. Empirical characterisation and theoretical simulation showed that the atomically dispersed Pt is stabilised on the TCOF support through the coordinated N1 -Pt-C2 sites, thereby induing the local polarization and improving the dielectric constant to reach the low exciton binding energy. These phenomena led to the promotion of exciton dissociation into electrons and holes and the acceleration of the separation and transport of photoexcited charge carriers from bulk to the surface. This work provides new insights into the regulation of exciton effect for the design of advanced polymer photocatalysts.
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Affiliation(s)
- Yang Xia
- Department of Science and Environmental Studies and the Centre for Environment and Sustainable Development (CESD), The Education University of Hong Kong, Tai Po, New Territories, Hong Kong, 999077, P. R. China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Bicheng Zhu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
| | - Liuyi Li
- Key Laboratory of Eco-materials Advanced Technology, College of Materials Science and Engineering, Fuzhou University, New Campus, Minhou, Fujian, 350108, China
| | - Wingkei Ho
- Department of Science and Environmental Studies and the Centre for Environment and Sustainable Development (CESD), The Education University of Hong Kong, Tai Po, New Territories, Hong Kong, 999077, P. R. China
- State Key Laboratory of Marine Pollution, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, 999077, P. R. China
| | - Jinsong Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China
| | - Haoming Chen
- Department of Chemistry, National Taiwan University, Taipei, 10617, Taiwan
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China
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39
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Zhang H, Wei W, Zhang KAI. Emerging conjugated polymers for heterogeneous photocatalytic chemical transformation. Chem Commun (Camb) 2023. [PMID: 37416940 DOI: 10.1039/d3cc02081a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/08/2023]
Abstract
In recent decades, the efficient utilization of solar energy through heterogeneous photocatalytic chemical transformation has attracted much attention. As emerging metal-free, pure organic and heterogeneous photocatalysts, π-conjugated polymers (CPs) have been used in visible-light-driven chemical transformations due to their stability, high specific surface area, metal-free nature, and high structural designability. In this review, we summarize the synthesis protocols and design strategies for efficient CP-based photocatalysts based on the photocatalytic mechanisms. Then we highlight the key progress in light-driven chemical transformation using CPs developed by our group. Finally, we present the outlook and possible challenges for future progress of the field.
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Affiliation(s)
- Hao Zhang
- Department of Materials Science, Fudan University, Songhu Road 2005, Shanghai 200438, P. R. China.
| | - Wenxin Wei
- Department of Materials Science, Fudan University, Songhu Road 2005, Shanghai 200438, P. R. China.
| | - Kai A I Zhang
- Department of Materials Science, Fudan University, Songhu Road 2005, Shanghai 200438, P. R. China.
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40
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Ye D, Liu L, Peng Q, Qiu J, Gong H, Zhong A, Liu S. Effect of Controlling Thiophene Rings on D-A Polymer Photocatalysts Accessed via Direct Arylation for Hydrogen Production. Molecules 2023; 28:4507. [PMID: 37298982 PMCID: PMC10254606 DOI: 10.3390/molecules28114507] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/31/2023] [Accepted: 05/31/2023] [Indexed: 06/12/2023] Open
Abstract
Conjugated polymer photocatalysts for hydrogen production have the advantages of an adjustable structure, strong response in the visible light region, adjustable energy levels, and easy functionalization. Using an atom- and step-economic direct C-H arylation method, dibromocyanostilbene was polymerized with thiophene, dithiophene, terthiophene, and fused thienothiophene and dithienothiophene, respectively, to produce donor-acceptor (D-A)-type linear conjugated polymers containing different thiophene derivatives with different conjugation lengths. Among them, the D-A polymer photocatalyst constructed from dithienothiophene could significantly broaden the spectral response, with a hydrogen evolution rate up to 12.15 mmol h-1 g-1. The results showed that the increase in the number of fused rings on thiophene building blocks was beneficial to the photocatalytic hydrogen production of cyanostyrylphene-based linear polymers. For the unfused dithiophene and terthiophene, the increase in the number of thiophene rings enabled more rotation freedom between the thiophene rings and reduced the intrinsic charge mobility, resulting in lower hydrogen production performance accordingly. This study provides a suitable process for the design of electron donors for D-A polymer photocatalysts.
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Affiliation(s)
- Dongnai Ye
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China; (D.Y.); (Q.P.); (H.G.)
- School of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Lei Liu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China; (D.Y.); (Q.P.); (H.G.)
| | - Qimin Peng
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China; (D.Y.); (Q.P.); (H.G.)
| | - Jiabin Qiu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China; (D.Y.); (Q.P.); (H.G.)
| | - Hao Gong
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China; (D.Y.); (Q.P.); (H.G.)
| | - Aiguo Zhong
- Department of Pharmacy & Chemistry, Taizhou University, Taizhou 318000, China;
| | - Shiyong Liu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, College of Materials, Metallurgical and Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, China; (D.Y.); (Q.P.); (H.G.)
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41
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Qian Y, Han Y, Zhang X, Yang G, Zhang G, Jiang HL. Computation-based regulation of excitonic effects in donor-acceptor covalent organic frameworks for enhanced photocatalysis. Nat Commun 2023; 14:3083. [PMID: 37248231 DOI: 10.1038/s41467-023-38884-w] [Citation(s) in RCA: 36] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 05/18/2023] [Indexed: 05/31/2023] Open
Abstract
The strong excitonic effects widely exist in polymer-semiconductors and the large exciton binding energy (Eb) seriously limits their photocatalysis. Herein, density functional theory (DFT) calculations are conducted to assess band alignment and charge transfer feature of potential donor-acceptor (D-A) covalent organic frameworks (COFs), using 1,3,5-tris(4-aminophenyl)triazine (TAPT) or 1,3,5-tris(4-aminophenyl)benzene (TAPB) as acceptors and tereph-thaldehydes functionalized diverse groups as donors. Given the discernable D-A interaction strengths in the D-A pairs, their Eb can be systematically regulated with minimum Eb in TAPT-OMe. Guided by these results, the corresponding D-A COFs are synthesized, where TAPT-OMe-COF possesses the best activity in photocatalytic H2 production and the activity trend of other COFs is associated with that of calculated Eb for the D-A pairs. In addition, further alkyne cycloaddition for the imine linkage in the COFs greatly improves the stability and the resulting TAPT-OMe-alkyne-COF with a substantially smaller Eb exhibits ~20 times higher activity than the parent COF.
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Affiliation(s)
- Yunyang Qian
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yulan Han
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiyuan Zhang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Ge Yang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Guozhen Zhang
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Hai-Long Jiang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.
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42
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Yan G, Sun X, Zhang Y, Li H, Huang H, Jia B, Su D, Ma T. Metal-Free 2D/2D van der Waals Heterojunction Based on Covalent Organic Frameworks for Highly Efficient Solar Energy Catalysis. NANO-MICRO LETTERS 2023; 15:132. [PMID: 37211571 PMCID: PMC10200743 DOI: 10.1007/s40820-023-01100-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 04/18/2023] [Indexed: 05/23/2023]
Abstract
Covalent organic frameworks (COFs) have emerged as a kind of rising star materials in photocatalysis. However, their photocatalytic activities are restricted by the high photogenerated electron-hole pairs recombination rate. Herein, a novel metal-free 2D/2D van der Waals heterojunction, composed of a two-dimensional (2D) COF with ketoenamine linkage (TpPa-1-COF) and 2D defective hexagonal boron nitride (h-BN), is successfully constructed through in situ solvothermal method. Benefitting from the presence of VDW heterojunction, larger contact area and intimate electronic coupling can be formed between the interface of TpPa-1-COF and defective h-BN, which make contributions to promoting charge carriers separation. The introduced defects can also endow the h-BN with porous structure, thus providing more reactive sites. Moreover, the TpPa-1-COF will undergo a structural transformation after being integrated with defective h-BN, which can enlarge the gap between the conduction band position of the h-BN and TpPa-1-COF, and suppress electron backflow, corroborated by experimental and density functional theory calculations results. Accordingly, the resulting porous h-BN/TpPa-1-COF metal-free VDW heterojunction displays outstanding solar energy catalytic activity for water splitting without co-catalysts, and the H2 evolution rate can reach up to 3.15 mmol g-1 h-1, which is about 67 times greater than that of pristine TpPa-1-COF, also surpassing that of state-of-the-art metal-free-based photocatalysts reported to date. In particular, it is the first work for constructing COFs-based heterojunctions with the help of h-BN, which may provide new avenue for designing highly efficient metal-free-based photocatalysts for H2 evolution.
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Affiliation(s)
- Ge Yan
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Adv. Mater., College of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China
| | - Xiaodong Sun
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Adv. Mater., College of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China.
| | - Yu Zhang
- Institute of Clean Energy Chemistry, Key Laboratory for Green Synthesis and Preparative Chemistry of Adv. Mater., College of Chemistry, Liaoning University, Shenyang, 110036, People's Republic of China
| | - Hui Li
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Hongwei Huang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, People's Republic of China
| | - Baohua Jia
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia
| | - Dawei Su
- Faculty of Science, School of Mathematical and Physical Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia.
| | - Tianyi Ma
- School of Science, RMIT University, Melbourne, VIC, 3000, Australia.
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43
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Zhang G, Zhao M, Su L, Yu H, Wang C, Sun D, Ding Y. Donor-Acceptor Covalent-Organic Frameworks Based on Phthalimide as an Electron-Deficient Unit for Efficient Visible-Light Catalytic Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2023; 15:20310-20316. [PMID: 36994986 DOI: 10.1021/acsami.3c00786] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
Donor-acceptor two-dimensional covalent-organic frameworks (COFs) have great potential as photocatalysts for hydrogen evolution because of their tunable structures, ordered and strong stacking, high crystallinity, and porosity. Herein, an acceptor unit, namely phthalimide, has been employed for the first time to construct COFs. Two donor-acceptor COFs (TAPFy-PhI and TAPB-PhI) have been successfully synthesized via a Schiff base reaction using phthalimide as the acceptor and 1,3,6,8-tetrakis(4-aminophenyl)pyrene (TAPFy) and 1,3,5-tris(4-aminophenyl)benzene (TAPB) as donors. The synthesized COFs exhibited high crystallinity, permanent porosity, excellent chemical stability, suitable band gaps, and broad visible-light absorption. In the presence of ascorbic acid (sacrificial reagent), the TAPFy-PhI COF exhibited an efficient photocatalytic performance with a hydrogen evolution rate of 1763 μmol g-1 h-1. Moreover, the photocatalytic performance was further improved by the addition of Pt (1 wt %) as a cocatalyst, and the hydrogen evolution rate reached 2718 μmol g-1 h-1.
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Affiliation(s)
- Guobing Zhang
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, Hefei University of Technology, Hefei 230009, China
- Key Laboratory of Advance Functional Materials and Devices of Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Mingshi Zhao
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, Hefei University of Technology, Hefei 230009, China
| | - Linghui Su
- Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, China
| | - Hao Yu
- Special Display and Imaging Technology Innovation Center of Anhui Province, Academy of Optoelectronic Technology, Anhui Province Key Laboratory of Measuring Theory and Precision Instrument, Hefei University of Technology, Hefei 230009, China
| | - Chenxi Wang
- Key Laboratory of Advance Functional Materials and Devices of Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
| | - Dengrong Sun
- College of Carbon Neutrality Future Technology, National Engineering Research Centre for Flue Gas Desulfurization, Carbon Neutral Technology Innovation Center of Sichuan, Sichuan University, Chengdu 610065, China
| | - Yunsheng Ding
- Key Laboratory of Advance Functional Materials and Devices of Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
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Enhanced photocatalytic hydrogen evolution activity of co-catalyst free S-scheme polymer heterojunctions via ultrasonic assisted reorganization in solvent. J Colloid Interface Sci 2023; 636:230-244. [PMID: 36634393 DOI: 10.1016/j.jcis.2023.01.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/08/2023]
Abstract
In this work, two donor-acceptor linear conjugated polymers were designed and synthesized based on thianthrene-5,5,10,10-tetraoxide (TTO) as the acceptor unit, benzo[1,2-b:4,5-b']dithiophene derivative (Py1) and thiophene (Py2) as the donor units, respectively. The Py1/Py2 composite was prepared by physical ball milling of the two polymers in a mixture, which was further treated with a N-methyl-2-pyrrolidone (NMP)-assisted sonication treatment, and the obtained catalyst was named N-Py1/Py2. Compared with the single polymer or Py1/Py2, the FTIR characteristic peaks of O=S=O have a red shift for N-Py1/Py2, accompanied by a profound change in morphology. Furthermore, N-Py1/Py2 has a broader light response and more efficient separation and transport of charge carriers, and as a result it exhibits a higher photocatalytic hydrogen evolution rate (26.5 mmol g-1 h-1) without the involvement of any co-catalyst than Py1/Py2 catalyst (3.56 mmol g-1 h-1). The underlying mechanism for the enhanced photocatalytic activity by the sonication treatment in NMP is discussed based both on experimental and theoretical calculation data.
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45
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Li YQ, Wang KZ. Photoelectrocatalytic Dioxygen Reduction Based on a Novel Thiophene-Functionalized Tricarbonylchloro(1,10-phenanthroline)rhenium(I). Molecules 2023; 28:molecules28073229. [PMID: 37049999 PMCID: PMC10096527 DOI: 10.3390/molecules28073229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/12/2023] [Accepted: 03/14/2023] [Indexed: 04/08/2023] Open
Abstract
A novel Re (I) complex of [Re(CO)3Cl(L)], {L = 2-([2,2’-bithiophen]-5-yl)-1-phenyl-1H-imidazo [4,5-f][1,10]phenanthroline}, was synthesized, and its optical (UV–Visible absorption and emission spectroscopy), cyclovoltammetric and photoelectrochemical oxygen reduction properties were studied. The geometric and electronic properties were also investigated by density functional theory calculations. It was found that the ITO electrode coated with drop-casted [Re(CO)3Cl(L)] film exhibited cathodic photocurrent generation characteristics. The illuminated film exhibited a maximum cathodic photocurrent up to 30.4 μA/cm2 with an illumination intensity of 100 mW/cm2 white light at a bias potential of −0.4 V vs. SCE in O2-saturated electrolyte solution, which was reduced by 5.1-fold when thoroughly deoxygenated electrolyte solution was used, signaling that the electrode performed well on the photoelectrochemical oxygen reduction. The photo-electrocatalytic hydrogen peroxide production was proved with a maximum H2O2 concentration of 6.39 μM during 5 h of the photoelectrocatalytic process. This work would guide the construction of more efficient rhenium-based photo(electro)catalytic molecular systems for O2 sensing, hydrogen peroxide production and other types of photoelectrochemical energy conversion and storage.
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Affiliation(s)
- Yu-Qin Li
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Ke-Zhi Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing 100875, China
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46
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Liu D, Yang X, Chen P, Zhang X, Chen G, Guo Q, Hou H, Li Y. Rational Design of PDI-Based Linear Conjugated Polymers for Highly Effective and Long-Term Photocatalytic Oxygen Evolution. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2300655. [PMID: 37000924 DOI: 10.1002/adma.202300655] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 03/12/2023] [Indexed: 06/19/2023]
Abstract
Constructed through relatively weak noncovalent forces, the stability of organic supramolecular materials has shown to be a challenge. Herein, the designing of a linear conjugated polymer is proposed through creating a chain polymer connected via bridging covalent bonds in one direction and retaining π-stacked aromatic columns in its orthogonal direction. Specifically, three analogs of linear conjugated polymers through tuning the aromatic core and its covalently linked moiety (bridging group) within the building block monomer are prepared. Cooperatively supported by strong π-π stacking interactions from the extended aromatic core of perylene and favorable dipole-dipole interactions from the bridging group, the as-expected high crystallinity, wide light absorption, and increased stability are successfully achieved for Oxamide-PDI (perylene diimide) through ordered molecular arrangement, and present a remarkable full-spectrum oxygen evolution rate of 5110.25 µmol g-1 h-1 without any cocatalyst. Notably, experimental and theoretical studies reveal that large internal dipole moments within Oxamide-PDI together with its ordered crystalline structure enable a robust built-in electric field for efficient charge carrier migration and separation. Moreover, density functional theory (DFT) calculations also reveal oxidative sites located at carbon atoms next to imide bonds and inner bay positions based on proven spatially separated photogenerated electrons and holes, thus resulting in highly efficient water photolysis into oxygen.
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Affiliation(s)
- Di Liu
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, P. R. China
| | - Xuan Yang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, P. R. China
| | - Peiyan Chen
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province. College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xinling Zhang
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, P. R. China
| | - GaoYuan Chen
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, P. R. China
| | - Qiwei Guo
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, P. R. China
| | - Huan Hou
- School of Chemical & Environmental Engineering, China University of Mining and Technology (Beijing), Beijing, 100083, P. R. China
| | - Yi Li
- Future Science Research Institute, Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 310013, P. R. China
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47
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Cao FY, Huang CL, Cheng TY, Cheng HJ, Wu TK, Cheng YJ. Solution-Processable Donor–Acceptor Copolymer Thin Films for Efficient Visible-Light-Driven Photocatalytic Hydrogen Evolution. ACS Macro Lett 2023; 12:468-474. [PMID: 36971302 DOI: 10.1021/acsmacrolett.3c00016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Conjugated polymers (CPs) have been actively utilized as photocatalysts for hydrogen evolution due to their easy synthetic tunability to endow specific functionalities, including visible-light absorption, higher-lying LUMO energy for proton reduction, and sufficient photochemical stability. Enhancing interfacial surface and compatibility of hydrophobic CPs with hydrophilic water is the central focus to improve the hydrogen evolution rate (HER). Although a number of successful approaches have been developed in recent years, tedious chemical modifications or post-treatment of CPs make reproducibility of the materials difficult. In this work, a solution processable PBDB-T polymer is directly deposited on a glass substrate to form a thin film that is immersed in an aqueous solution to photochemically catalyze H2 generation. The PBDB-T thin film showed a much higher hydrogen evolution rate (HER) than the typical method of using PBDB-T suspended solids due to the enhanced interfacial area with a more suitable solid-state morphology. When the thickness of the thin film is reduced to dramatically improve the utilization of the photocatalytic material, the 0.1 mg-based PBDB-T thin film exhibited an unprecedentedly high HER of 120.90 mmol h-1 g-1.
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48
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Tunable Donor-Acceptor Linear Conjugated Polymers Involving Cyanostyrylthiophene Linkages for Visible-Light-Driven Hydrogen Production. Molecules 2023; 28:molecules28052203. [PMID: 36903455 PMCID: PMC10004844 DOI: 10.3390/molecules28052203] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 02/11/2023] [Accepted: 02/25/2023] [Indexed: 03/04/2023] Open
Abstract
In this paper, an atom- and step-economic direct C-H arylation polymerization (DArP) strategy was developed to access cyanostyrylthiophene (CST)-based donor-acceptor (D-A) conjugated polymers (CPs) used for photocatalytic hydrogen production (PHP) from water reduction. The new CST-based CPs CP1-CP5 with varied building blocks were systematically studied by X-ray single-crystal analysis, FTIR, scanning electron microscopy, UV-vis, photoluminescence, transient photocurrent response, cyclic voltammetry measurements, and a PHP test, which showed that the phenyl-cyanostyrylthiophene-based CP3 exhibits a superior hydrogen evolution rate (7.60 mmol h-1 g-1) compared to other conjugated polymers. The structure-property-performance correlation results obtained in this study will provide an important guideline for the rational design of high-performance D-A CPs for PHP applications.
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49
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Zhao Y, Gao J, Yang Z, Li L, Cui J, Zhang P, Hu C, Diao C, Choi W. Efficient Exciton Dissociation in Ionically Interacted Methyl Viologen and Polymeric Carbon Nitride for Superior H 2O 2 Photoproduction. ACS Catal 2023. [DOI: 10.1021/acscatal.2c06359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Affiliation(s)
- Yubao Zhao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Jingyu Gao
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Zhenchun Yang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Lina Li
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Jiahao Cui
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Peng Zhang
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Chun Hu
- Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education & Institute of Environmental Research at Greater Bay, Guangzhou University, 510006 Guangzhou, P. R. China
| | - Caozheng Diao
- Singapore Synchrotron Light Source, National University of Singapore, 117603 Singapore, Singapore
| | - Wonyong Choi
- KENTECH Institute for Environmental and Climate Technology, Korea Institute of Energy Technology (KENTECH), 58330 Naju, Korea
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50
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Chen P, Ru C, Hu L, Yang X, Wu X, Zhang M, Zhao H, Wu J, Pan X. Construction of Efficient D–A-Type Photocatalysts by B–N Bond Substitution for Water Splitting. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Peiyan Chen
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Chenglong Ru
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Leilei Hu
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xuan Yang
- School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, People’s Republic of China
| | - Xuan Wu
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Mingcai Zhang
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Hao Zhao
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
- School of Physics and Electronic Information, Yantai University, 30 Qingquan Road, Yantai 264005, People’s Republic of China
| | - Jincai Wu
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
| | - Xiaobo Pan
- State Key Laboratory of Applied Organic Chemistry (Lanzhou University), Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, People’s Republic of China
- Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000 People’s Republic of China
- Key Laboratory of Petroleum Resources Research, Gansu Province, Lanzhou 730000, People’s Republic of China
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