1
|
Liu G, Xie F, Cai X, Ye J. Spin Crossover and Exchange Effects on Oxygen Evolution Reaction Catalyzed by Bimetallic Metal Organic Frameworks. ACS Catal 2024; 14:8652-8665. [PMID: 38868096 PMCID: PMC11165450 DOI: 10.1021/acscatal.4c01091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/21/2024] [Accepted: 05/08/2024] [Indexed: 06/14/2024]
Abstract
Bimetallic metal-organic frameworks (BMOFs) have shown a superior oxygen evolution reaction (OER) performance, attributed to the synergistic effects of dual metal sites. However, the significant role of these dual-metal synergies in the OER is not yet fully understood. In this study, we employed density functional theory to systematically investigate the OER performance of NiAl- and NiFe-based BMOFs by examining all possible spin states of each intermediate across diverse external potentials and pH environments. We found that the spin state featuring a shallow hole trap state and Ni ions with a higher oxidation state serve as strong oxidizing agents, promoting the OER. An external potential-induced spin crossover was observed in each intermediate, resulting in significant changes in the overall reaction and activation energies due to altered energy levels. Combining the constant potential method and the electrochemical nudged elastic band method, we mapped the minimum free energy barriers of the OER under varied external potential and pH by considering the spin crossover effect for both NiAl and NiFe BMOFs. The results showed that NiFe exhibits better OER thermodynamics and kinetics, which is in good agreement with experimentally measured OER polarization curves and Tafel plots. Moreover, we found that the improved OER kinetics of NiFe not only is attributed to lower barriers but also is a result of improved electrical conductivity arising from the synergistic effects of Ni-Fe dual-metal sites. Specifically, replacing the second metal Al with Fe leads to two significant outcomes: a reduction in both the band gap and the effective hole mass compared to NiAl, and the initiation of super- and double-exchange interactions within the Ni-F-Fe chain, thereby enhancing electron transfer and hopping and leading to the improved OER kinetics.
Collapse
Affiliation(s)
- Guangsheng Liu
- Department
of Chemistry and Biochemistry, Duquesne
University, Pittsburgh, Pennsylvania 15282, United States
| | - Feng Xie
- Department
of Chemistry and Chemical Biology, Rutgers
University, Piscataway, New Jersey 08854, United States
| | - Xu Cai
- State
Key Laboratory of Photocatalysis on Energy and Environment, College
of Chemistry, Fuzhou University, Fuzhou 350108, PR China
| | - Jingyun Ye
- Department
of Chemistry and Biochemistry, Duquesne
University, Pittsburgh, Pennsylvania 15282, United States
| |
Collapse
|
2
|
Su Y, Li K, Li Z, Tian Y, Liu B, Yue G, Tian Y. Visible light to the second near-infrared light-harvesting donor-acceptor 1-donor-acceptor 2-type terpolymers for boosted photocatalytic hydrogen evolution via dual-sulfone-acceptor engineering. J Colloid Interface Sci 2024; 661:333-344. [PMID: 38301470 DOI: 10.1016/j.jcis.2024.01.202] [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: 09/08/2023] [Revised: 12/02/2023] [Accepted: 01/27/2024] [Indexed: 02/03/2024]
Abstract
Developing visible to near-infrared light-absorbing conjugated polymer photocatalysts is crucial for enhancing solar energy utilization efficiency, as most conjugated organic polymers only absorb light in the visible range. In this work, we firstly developed a novel thiophene S,S-dioxide (TDO) monomer with the stronger electron-withdrawing character, and then prepared a series of donor-acceptor1-donor-acceptor2-type (D-A1-D-A2-type) conjugated terpolymers (THTDB-1-THTDB-5) by statistically adjusting the molar ratio of two sulfone-based acceptor monomers, dibenzothiophene-S,S-dioxide (BTDO, A1) and TDO (A2). These terpolymers demonstrate a gradually expanding absorption range from visible light to the second near-infrared (Vis-to-NIR-II) region with the gradual increase of the TDO contents in the polymer skeleton, showcasing excellent absorption properties and efficient light-capturing capabilities. The optimized D-A1-D-A2 polymer photocatalyst THTDB-4 exhibits a high hydrogen evolution rate of 21.27 mmol g-1 h-1 under visible light without any co-catalyst. The dual-sulfone-acceptor engineering offers a viable approach for developing efficient the longer Vis-to-NIR-II light-harvesting polymer photocatalysts.
Collapse
Affiliation(s)
- Yuanle Su
- Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Keming Li
- Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Zhanfeng Li
- Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, PR China.
| | - Yanting Tian
- College of Physics, Taiyuan University of Technology, Taiyuan 030024, PR China
| | - Baoyou Liu
- Ningxia Hui Autonomous Region Screen Display Organic Materials Engineering Technology Research Center, Ningxia Sinostar Display Material Co., Ltd, Yinchuan 750003, PR China
| | - Gang Yue
- Ningxia Hui Autonomous Region Screen Display Organic Materials Engineering Technology Research Center, Ningxia Sinostar Display Material Co., Ltd, Yinchuan 750003, PR China
| | - Yue Tian
- Key Laboratory of Advanced Transducers and Intelligent Control System, Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, PR China.
| |
Collapse
|
3
|
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.
Collapse
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.
| |
Collapse
|
4
|
Facile Construction of Intramolecular g-CN-PTCDA Donor-Acceptor System for Efficient CO2 Photoreduction. Catalysts 2023. [DOI: 10.3390/catal13030600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/19/2023] Open
Abstract
Due to the different electron affinity, the construction of a donor-acceptor (DA) system in the graphitic carbon nitride (g-CN) matrix is an attractive tactic to accelerate photo-induced electron-holes separation, and then further elevate its photocatalytic performance. In this work, perylene tetracarboxylic dianhydride (PTCDA) with magnificent electron affinity and excellent thermal stability was chosen to copolymerize with urea via facile one-pot thermal copolymerization to fabricate g-CN-PTCDA equipped with DA structures. The specific surface area of g-CN-PTCDA would be enlarged and the visible light absorption range would be broadened simultaneously when adopting this copolymerization strategy. A series of characterizations such as electron paramagnetic resonance (EPR), steady and transient photoluminescence spectra (PL), electrochemical impedance spectroscopy (EIS), and photocurrent tests combined with computational simulation confirmed the charge separation and transfer efficiency dramatically improved due to the DA structures construction. When 0.25% wt PTCDA was introduced, the CO evolution rate was nearly 23 times than that of pristine g-CN. The CO evolution rate could reach up to 87.2 μmol g−1 h−1 when certain Co2+ was added as co-catalytic centers. Meanwhile, g-CN-1 mg PTCDA-Co exhibited excellent long-term stability and recyclability as a heterogeneous photocatalyst. This research may shed light on designing more effective DA structures for solar-to-energy conversion by CO2 reduction.
Collapse
|
5
|
Liu H, Zhao F, Ming S, Du Y, Zhao J, Zhang W, Zhang J. Effect of substitution position of carbazole based conjugated polymers on the photocatalytic hydrogen evolution activities of conjugated polymer/g-C3N4 heterojunction catalysts. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
6
|
Liang R, Luo J, Lin S, Li Z, Dong Z, Wu Y, Wang Y, Cao X, Meng C, Yu F, Liu Y, Zhang Z. Boosting the Photoreduction Uranium Activity for Donor–acceptor–acceptor Type Conjugated Microporous Polymers by Statistical Copolymerization. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
7
|
Han C, Xiang S, Jin S, Zhang C, Jiang JX. Rational Design of Conjugated Microporous Polymer Photocatalysts with Definite D−π–A Structures for Ultrahigh Photocatalytic Hydrogen Evolution Activity under Natural Sunlight. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Changzhi Han
- Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Sihui Xiang
- Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Shenglin Jin
- Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Chong Zhang
- Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
| | - Jia-Xing Jiang
- Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an 710062, P.R. China
- Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials & Technology, Jianghan University, Wuhan 430056, P.R. China
| |
Collapse
|
8
|
Wang Z, Zheng X, Chen P, Li D, Zhang Q, Liu H, Zhong J, Lv W, Liu G. Synchronous construction of a porous intramolecular D-A conjugated polymer via electron donors for superior photocatalytic decontamination. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127379. [PMID: 34655871 DOI: 10.1016/j.jhazmat.2021.127379] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/12/2021] [Accepted: 09/26/2021] [Indexed: 06/13/2023]
Abstract
The development of conjugated polymers with intramolecular donor-acceptor (D-A) units has the capacity to enhance the photocatalytic performance of carbon nitride (g-C3N4) for the removal of antibiotics from ambient ecosystems. This strategy addresses the challenge of narrowing the band gap of g-C3N4 while maintaining its high LUMO position. For this study, we introduced the above donor units into g-C3N4 to construct intramolecular D-A structures through the copolymerization of dicyandiamide with creatinine, which strategically extended light absorption into the green region and expedited photoelectron separation. The introduction of electron donor blocks kept the LUMO distributed on the melem, which maintained the high LUMO energy level of the copolymer with the potential to generate oxygen radicals. The as-prepared porous D-A conjugated polymer enhanced the photocatalytic degradation of sulfisoxazole with kinetic constants 5.6 times higher than that of g-C3N4 under blue light and 15.3 times higher under green light. Furthermore, we surveyed the degradation mechanism including the effective active species and degradation pathways. This study offers a new perspective for the synchronous construction of a porous intramolecular D-A conjugated polymer to enhance water treatment and environmental remediation capacities.
Collapse
Affiliation(s)
- Zhongquan Wang
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Xiaoshan Zheng
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Ping Chen
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Daguang Li
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Qianxin Zhang
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Haijin Liu
- Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, School of Environment, Henan Normal University, Xinxiang 453007, China
| | - Jiapeng Zhong
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Wenying Lv
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China
| | - Guoguang Liu
- School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, China.
| |
Collapse
|
9
|
Li Z, Zeng W, Li MH, Zheng JF, Fang X, Lin MJ. Donor-Acceptor Conjugated Heptazine Polymers with Highly Efficient Photocatalytic Degradations towards Tetracyclines. Macromol Rapid Commun 2021; 42:e2100577. [PMID: 34626510 DOI: 10.1002/marc.202100577] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/03/2021] [Indexed: 12/11/2022]
Abstract
Photocatalysis is an efficient and green technology in the environmental protection. Due to the high charge separation and transfer, donor-acceptor (D-A) conjugated polymers attract much attention for their photocatalytic degradations towards organic pollutants. Herein, the authors reported three novel D-A conjugated polymers, named as HPBP, HPTP, and HPF, with heptazine moieties as electron acceptors, while biphenyl, terphenyl, or fluorene moieties as electron donors, respectively, which indeed exhibit a highly efficient photocatalytic degradation towards tetracyclines upon the visible-light irradiation. Among them, the photocatalytic performance of HPF is especially noticeable with the degradation rate up to 87% within 30 min, almost 11 times in comparison to those of pristine g-C3 N4 , which is mainly attributed to its high crystallinity and conjugation. For their photocatalytic mechanism, the •O2 - radical anions are regarded as the active species.
Collapse
Affiliation(s)
- Zhen Li
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | - Wei Zeng
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | - Meng-Hua Li
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | - Jun-Feng Zheng
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | - Xin Fang
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China
| | - Mei-Jin Lin
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350116, China.,College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350116, China
| |
Collapse
|