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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; 63: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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Qiu J, Meng K, Zhang Y, Cheng B, Zhang J, Wang L, Yu J. COF/In 2S 3 S-Scheme Photocatalyst with Enhanced Light Absorption and H 2O 2-Production Activity and fs-TA Investigation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400288. [PMID: 38411357 DOI: 10.1002/adma.202400288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 01/30/2024] [Indexed: 02/28/2024]
Abstract
Photocatalytic hydrogen peroxide (H2O2) synthesis from water and O2 is an economical, eco-friendly, and sustainable route for H2O2 production. However, single-component photocatalysts are subjected to limited light-harvesting range, fast carrier recombination, and weak redox power. To promote photogenerated carrier separation and enhance redox abilities, an organic/inorganic S-scheme photocatalyst is fabricated by in situ growing In2S3 nanosheets on a covalent organic framwork (COF) substrate for efficient H2O2 production in pure water. Interestingly, compared to unitary COF and In2S3, the COF/In2S3 S-scheme photocatalysts exhibit significantly larger light-harvesting range and stronger visible-light absorption. Partial density of state calculation, X-ray photoelectron spectroscopy, and femtosecond transient absorption spectroscopy reveal that the coordination between In2S3 and COF induces the formation of mid-gap hybrid energy levels, leading to smaller energy gaps and broadened absorption. Combining electron spin resonance spectroscopy, radical-trapping experiments, and isotope labeling experiments, three pathways for H2O2 formation are identified. Benefited from expanded light-absorption range, enhanced carrier separation, strong redox power, and multichannel H2O2 formation, the optimal composite shows an impressive H2O2-production rate of 5713.2 µmol g-1 h-1 in pure water. This work exemplifies an effective strategy to ameliorate COF-based photocatalysts by building S-scheme heterojunctions and provides molecular-level insights into their impact on energy level modulation.
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Affiliation(s)
- Junyi Qiu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Kai Meng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Yong Zhang
- School of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi, 435003, P. R. China
| | - Bei Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Jianjun Zhang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng St, Wuhan, 430078, P. R. China
| | - Linxi Wang
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng St, Wuhan, 430078, P. R. China
| | - Jiaguo Yu
- Laboratory of Solar Fuel, Faculty of Materials Science and Chemistry, China University of Geosciences, 68 Jincheng St, Wuhan, 430078, P. R. China
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3
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Patil R, Rajput A, Matsagar BM, Chen NCR, Ujihara M, Salunkhe RR, Yadav P, Wu KCW, Chakraborty B, Dutta S. Elevated temperature-driven coordinative reconstruction of an unsaturated single-Ni-atom structure with low valency on a polymer-derived matrix for the electrolytic oxygen evolution reaction. NANOSCALE 2024; 16:7467-7479. [PMID: 38511345 DOI: 10.1039/d4nr00337c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A high-temperature pyrolysis-controlled coordination reconstruction resulted in a single-Ni-atom structure with a Ni-Nx-C structural unit (x = N atom coordinated to Ni). Pyrolysis of Ni-phen@ZIF-8-RF at 700 °C resulted in NiNP-NC-700 with predominantly Ni nanoparticles. Upon elevating the pyrolysis temperature from 700 to 900 °C, a coordination reconstruction offers Ni-Nx atomic sites in NiSA-NC-900. A combined investigation with X-ray absorption spectroscopy, X-ray photoelectron spectroscopy, and soft X-ray L3-edge spectroscopy suggests the stabilization of low-valent Niδ+ (0 < δ < 2) in the Ni-N-C structural units. The oxygen evolution reaction (OER) is a key process during water splitting in fuel cells. However, OER is a thermodynamically uphill reaction with multi-step proton-coupled electron transfer and sluggish kinetics, due to which there is a need for a catalyst that can lower the OER overpotentials. The adsorption energy of a multi-step reaction on a single metal atom with coordination unsaturation tunes the adsorption of each oxygenated intermediate. The promising OER activity of the NiSA-NC-900/NF anode on nickel foam was followed by the overall water splitting (OWS) using using NiSA-NC-900/NF as anode and Pt coil as the cathodic counterpart, wherein a cell potential of 1.75 V at 10 mA cm-2 was achieved. The cell potential recorded with Pt(-)/(+)NiSA-NC-900/NF was much lower than that obtained for other cells, i.e., Pt(-)/NF and NF(-)/(+)NF, which enhances the potentials of low-valent NiSAs for insightful understanding of the OER. At a constant applied potential of 1.61 V (vs. RHE) for 12 h, an small increase in current for initial 0.6 h followed by a constant current depicts the fair stability of catalyst for 12 h. Our results offer an insightful angle into the OER with a coordinatively reconstructed single-Ni-atom structure at lower valency (<+2).
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Affiliation(s)
- Rahul Patil
- Electrochemical Energy & Sensor Research Laboratory, Amity Institute of Click Chemistry Research & Studies, Amity University, Noida, India.
| | - Anubha Rajput
- Department of Chemistry, Indian Institute of Technology, New Delhi, India.
| | - Babasaheb M Matsagar
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Norman C R Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Molecular Science and Technology Program, Taiwan International Graduate Program Academia Sinica, Taiwan
- International Graduate Program of Molecular Science and Technology (NTU-MST), National Taiwan University, Taiwan
| | - Masaki Ujihara
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Rahul R Salunkhe
- Materials Research Laboratory Department of Physics, Indian Institute of Technology, Jammu, India
| | - Praveen Yadav
- Synchrotron X-ray Facility, Raja Ramanna Centre for Advanced Technology, Rajendra Nagar, Indore, Madhya Pradesh 452013, India
| | - Kevin C-W Wu
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | | | - Saikat Dutta
- Electrochemical Energy & Sensor Research Laboratory, Amity Institute of Click Chemistry Research & Studies, Amity University, Noida, India.
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Paul R, Boruah A, Das R, Chakraborty S, Chahal K, Deka DJ, Peter SC, Mai BK, Mondal J. Pyrolysis Free Out-of-Plane Co-Single Atomic Sites in Porous Organic Photopolymer Stimulates Solar-Powered CO 2 Fixation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305307. [PMID: 37926775 DOI: 10.1002/smll.202305307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/11/2023] [Indexed: 11/07/2023]
Abstract
Herein, a facile strategy is illustrated to develop pyrolysis-free out-of-plane coordinated single atomic sites-based M-POP via a one-pot Friedel Craft acylation route followed by a post-synthetic metalation. The optimized geometry of the Co@BiPy-POP clearly reveals the presence of out-of-plane Co-single atomic sites in the porous backbone. This novel photopolymer Co@BiPy-POP shows extensive π-conjugations followed by impressive light harvesting ability and is utilized for photochemical CO2 fixation to value-added chemicals. A remarkable conversion of styrene epoxide (STE) to styrene carbonate (STC) (≈98%) is obtained under optimized photocatalytic conditions in the existence of promoter tert-butyl ammonium bromide (TBAB). Synchrotron-based X-ray adsorption spectroscopy (XAS) analysis reveals the single atom coordination sites along with the metal (Co) oxidation number of +2.16 in the porous network. Moreover, in situ diffuse reflectance spectroscopy (DRIFTS) and electron paramagnetic resonance (EPR) investigations provide valuable information on the evolution of key reaction intermediates. Comprehensivecomputational analysis also helps to understand the overall mechanistic pathway along with the interaction between the photocatalyst and reactants. Overall, this study presents a new concept of fabricating porous photopolymers based on a pyrolysis-free out-of-plane-coordination strategy and further explores the role of single atomic sites in carrying out feasible CO2 fixation reactions.
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Affiliation(s)
- Ratul Paul
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Ankita Boruah
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Risov Das
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
| | - Subhajit Chakraborty
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
| | - Kapil Chahal
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Dhruba Jyoti Deka
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
| | - Sebastian C Peter
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India
| | - Binh Khanh Mai
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - John Mondal
- Department of Catalysis and Fine Chemicals, CSIR- Indian Institute of Chemical Technology, Uppal Road, Hyderabad, 500007, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201001, India
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5
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Xu Y, Di M, Liu J, Li Z, Wang Y, Tang N. Enhancing Visible-Light Absorption of 2D Carbon Nitride by Constructing 2D/2D van der Waals Heterojunctions of Carbon Nitride/Nitrogen-Superdoped Graphene. ACS OMEGA 2024; 9:4804-4810. [PMID: 38313550 PMCID: PMC10831856 DOI: 10.1021/acsomega.3c08308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/31/2023] [Accepted: 01/08/2024] [Indexed: 02/06/2024]
Abstract
Carbon nitride sheets (CNs) down to the two-dimensional (2D) limit have been widely used in photoelectric conversion due to their inherent band gap and extremely short charge-carrier diffusion distance. However, the utilization of visible light remains low due to the rapid recombination of photogenerated electron-hole pairs and enlarged band gap. Here, atomically thin 2D/2D van der Waals heterojunctions (vdWHs) of N-superdoped graphene (NG) and CNs (CNs/NG) are fabricated via a facile electrostatic self-assembly method. Our results revealed that the vdWHs can increase the visible-light absorption of CNs by extending the absorption edge from 455 to up to 490 nm. The recombination of photogenerated electron-hole pairs is inhibited because superdoped N in CNs/NG facilitates the transmission of photogenerated carriers in the melon chain. This study opens a new avenue for narrowing the band gap and promoting photoexcited carrier separation in carbon-nitride-based materials.
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Affiliation(s)
- Yongjie Xu
- School
of Education, Jiangsu Open University, Nanjing 210036, China
| | - Maoyun Di
- Laboratory
of Magnetic and Electric Functional Materials and the Applications,
The Key Laboratory of Shanxi Province, College of Material Science
and Technology, Taiyuan University of Science
and Technology, Taiyuan 030024, China
| | - Jiawei Liu
- National
Laboratory of Solid State Microstructures, Collaborative Innovation
Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory
for Nanotechnology, Nanjing University, Nanjing 210093, China
| | - Ziying Li
- National
Laboratory of Solid State Microstructures, Collaborative Innovation
Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory
for Nanotechnology, Nanjing University, Nanjing 210093, China
| | - Yong Wang
- Wide
Bandgap Semiconductor Technology Disciplines State Key Laboratory,
School of Microelectronics, Academy of Advanced Interdisciplinary
Research, Xidian University, Xi’an 710071, China
- Emerging
Device and Chip Laboratory, Hangzhou Institute of Technology, Xidian University, Hangzhou 311200, China
| | - Nujiang Tang
- National
Laboratory of Solid State Microstructures, Collaborative Innovation
Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory
for Nanotechnology, Nanjing University, Nanjing 210093, China
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