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Xie W, Xu J, Md Idros U, Katsuhira J, Fuki M, Hayashi M, Yamanaka M, Kobori Y, Matsubara R. Metal-free reduction of CO 2 to formate using a photochemical organohydride-catalyst recycling strategy. Nat Chem 2023:10.1038/s41557-023-01157-6. [PMID: 36959509 DOI: 10.1038/s41557-023-01157-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 02/09/2023] [Indexed: 03/25/2023]
Abstract
Increasing levels of CO2 in the atmosphere is a problem that must be urgently resolved if the rise in current global temperatures is to be slowed. Chemically reducing CO2 into compounds that are useful as energy sources and carbon-based materials could be helpful in this regard. However, for the CO2 reduction reaction (CO2RR) to be operational on a global scale, the catalyst system must: use only renewable energy, be built from abundantly available elements and not require high-energy reactants. Although light is an attractive renewable energy source, most existing CO2RR methods use electricity and many of the catalysts used are based on rare heavy metals. Here we present a transition-metal-free catalyst system that uses an organohydride catalyst based on benzimidazoline for the CO2RR that can be regenerated using a carbazole photosensitizer and visible light. The system is capable of producing formate with a turnover number exceeding 8,000 and generates no other reduced products (such as H2 and CO).
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Affiliation(s)
- Weibin Xie
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan
| | - Jiasheng Xu
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan
| | - Ubaidah Md Idros
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan
| | - Jouji Katsuhira
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan
| | - Masaaki Fuki
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan
- Molecular Photoscience Research Center, Kobe University, Kobe, Japan
| | - Masahiko Hayashi
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan
| | - Masahiro Yamanaka
- Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Tokyo, Japan.
| | - Yasuhiro Kobori
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan.
- Molecular Photoscience Research Center, Kobe University, Kobe, Japan.
| | - Ryosuke Matsubara
- Department of Chemistry, Graduate School of Science, Kobe University, Kobe, Japan.
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2
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Salt-templated porous melamine-based conjugated polymers for selective oxidation of amines into imines under visible light. J Colloid Interface Sci 2023; 634:159-168. [PMID: 36535155 DOI: 10.1016/j.jcis.2022.12.031] [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: 10/11/2022] [Revised: 12/06/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Conjugated polymers have a broad application foreground in the field of photocatalytic organic synthesis to produce value-added chemicals due to their functional diversity, broad light responsive ability, high thermal and chemical stability, and tunable band structure. Herein, using mixed chloride salts (i.e., NaCl/LiCl) as building template, a series of porous conjugated polymers constructed by melamine and terephthalaldehyde monomers were obtained through a Schiff-base reaction in the absence of any external solvent. Melamine-terephthalaldehyde polymer (i.e., PMTPA-x, x represents the mass ratio of salt-mixture to mixed precursors of PMTPA) materials displayed porous morphologies and possessed different energy band structures via regulating the mass ratio of mixed-salt to monomers. Specifically, PMTPA-20 has a larger specific surface area and more suitable redox potential towards the photocatalytic oxidative coupling of amines to imines. Under visible light, with molecular oxygen as oxidant, PMTPA-20 achieves 97% conversion of benzylamine in 8 h which is 3.9 times higher than that of pristine PMTPA (25% conversion in 8 h). In addition, PMTPA-20 catalyst has good structure stability and reusability performance for photocatalytic reactions.
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Chi X, Chen Q, Lan ZA, Zhang X, Chen X, Wang X. Structure-Property Relationship of Cyano-Functionalized Conjugated Polymers for Photocatalytic Hydrogen Production. Chemistry 2023; 29:e202202734. [PMID: 36173922 DOI: 10.1002/chem.202202734] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Indexed: 01/11/2023]
Abstract
Conjugated polymers (CPs) have garnered increasing attention in the field of photocatalysis due to their stability and molecular tunability. Understanding the structure-property relationship in CPs and addressing appropriate molecular design strategies are pivotal to improving the photocatalytic performance of CPs. Herein, a new efficient cyano (CN) engineering approach was proposed to promote the photocatalytic performance of CPs, and three representative CP-based photocatalysts with different CN contents were tailor-made to investigate the relationship between CN functionalization and photocatalytic activity. A series of systematically experimental and theoretical studies reveal that CN functionalization contributes to strengthening the donor-acceptor (D-A) interaction, enhancing the light absorption ability, charge separation/transfer efficiency, and hydrophilicity of CPs, and also facilitating the output of separated photoinduced electrons from CPs to Pt cocatalyst. Thus, the dicyano-functionalized polymer (P-2CN) manifests an attractive photocatalytic performance in hydrogen production. This study provides a facile strategy to develop excellent CP-based photocatalysts for solar fuel production.
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Affiliation(s)
- Xu Chi
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108, Fuzhou, P. R. China
| | - Qian Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108, Fuzhou, P. R. China
| | - Zhi-An Lan
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108, Fuzhou, P. R. China
| | - Xirui Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108, Fuzhou, P. R. China
| | - Xiong Chen
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108, Fuzhou, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, 350108, Fuzhou, P. R. China
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Coupling photocatalytic water oxidation with reductive transformations of organic molecules. Nat Commun 2022; 13:6186. [PMID: 36261445 PMCID: PMC9581948 DOI: 10.1038/s41467-022-33778-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/03/2022] [Indexed: 11/14/2022] Open
Abstract
The utilization of readily available and non-toxic water by photocatalytic water splitting is highly attractive in green chemistry. Herein we report that light-induced oxidative half-reaction of water splitting is effectively coupled with reduction of organic compounds, which provides a light-induced avenue to use water as an electron donor to enable reductive transformations of organic substances. The present strategy allows various aryl bromides to undergo smoothly the reductive coupling with Pd/g-C3N4* as the photocatalyst, giving a pollutive reductant-free method for synthesizing biaryl skeletons. Moreover, the use of green visible-light energy endows this process with more advantages including mild conditions and good functional group tolerance. Although this method has some disadvantages such as a use of environmentally unfriendly 1,2-dioxane, an addition of Na2CO3 and so on, it can guide chemists to use water as a reducing agent to develop clean procedures for various organic reactions. While reductive coupling strategies in organic synthesis are crucial, most require additional sacrificial or toxic reagents. Here, authors demonstrate water as mild reducing agent in the photochemical reduction of organic compounds paired with photocatalytic water oxidation.
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Ye W, Wang Y, Ji G, Zhang F, Zhao Y, Liu Z. Carbazolic Conjugated Organic Polymers for Visible-Light-Driven CO 2 Photoreduction with H 2 O to CO with High Efficiency and Selectivity. CHEMSUSCHEM 2022; 15:e202200759. [PMID: 35638154 DOI: 10.1002/cssc.202200759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/30/2022] [Indexed: 06/15/2023]
Abstract
Visible-light-driven CO2 photoreduction with H2 O to value-added chemicals in high efficiency and selectivity is significant but challenging. Herein, a series of carbazolic conjugated organic polymers (CB-COPs) with electron donor-acceptor (D-A) structures were prepared, which showed high efficiency for visible-light-driven photocatalytic reduction of CO2 with H2 O in a solid-gas mode, affording CO as the exclusive carbonaceous product. Especially, CB-COP-mpd derived from 3,5-di(9H-carbazol-9-yl)pyridine exhibited the highest CO evolution rate up to 191.46 μmol g-1 h-1 with a selectivity of 100 %. Mechanism studies showed that carbazolyl is a promising electron donor candidate for constructing CB-COPs with D-A structures, capable of improving the catalytic efficiency and suppressing H2 generation. The acceptor building block with excessive electron withdrawing capability was favorable to H2 O adsorption, thus resulting in the generation of H2 . This work provides new insights for designing COPs photocatalysts for CO2 photocatalytic reduction.
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Affiliation(s)
- Wenqiang Ye
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun North First Street 2, 100190, Beijing, P. R. China
- School of Science, China University of Geosciences, 100083, Beijing, P. R. China
| | - Yuepeng Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun North First Street 2, 100190, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China)
| | - Guipeng Ji
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun North First Street 2, 100190, Beijing, P. R. China
| | - Fengtao Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun North First Street 2, 100190, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China)
| | - Yanfei Zhao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun North First Street 2, 100190, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China)
| | - Zhimin Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Zhongguancun North First Street 2, 100190, Beijing, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China)
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Yu Z, Xiao Y, Guo S, Min F, Sun Q, Song R, Li J. Visible Light-Driven Selective Reduction of CO 2 by Acetylene-Bridged Cobalt Porphyrin Conjugated Polymers. CHEMSUSCHEM 2022; 15:e202200424. [PMID: 35445580 DOI: 10.1002/cssc.202200424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 04/07/2022] [Indexed: 06/14/2023]
Abstract
Photocatalytic conversion of CO2 into renewable fuels with high efficiency and selectivity is desirable for solar energy utilization, but remains a great challenge. Herein, cobalt(II)-porphyrin functionalized conjugated polymers with acetylene bridging units, assembled through the Sonogashira cross coupling reaction, as heterogeneous catalysts for CO2 photoreduction were presented. Experimental investigations and density functional theory calculations demonstrated the crucial roles of Co centers in porphyrin units for CO2 activation and conversion, while excessive acetylene group prompted the competing hydrogen evolution reaction and reduced the selectivity. Thus, the CoPor-DBBP afforded superior activity for the CO generation with a rate of 286.7 μmol g-1 h-1 and high selectivity of up to 90.4 %. This work presents a new insight for rationally designing of porphyrin-based conjugated polymers as energetic photocatalyst in CO2 reduction.
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Affiliation(s)
- Zhen Yu
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Yuting Xiao
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Shien Guo
- Institute of Advanced Materials (IAM), College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, P. R. China
| | - Feng Min
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Qing Sun
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Renjie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
| | - Jinheng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang Hangkong University, Nanchang, 330063, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang, Henan, 475004, P. R. China
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Wang H, Yang C, Chen F, Zheng G, Han Q. A Crystalline Partially Fluorinated Triazine Covalent Organic Framework for Efficient Photosynthesis of Hydrogen Peroxide. Angew Chem Int Ed Engl 2022; 61:e202202328. [PMID: 35229432 DOI: 10.1002/anie.202202328] [Citation(s) in RCA: 61] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Indexed: 11/07/2022]
Abstract
A partially fluorinated, metal-free, imine-linked two-dimensional triazine covalent organic framework (TF50 -COF) photocatalyst was developed. Fluorine (F)-substituted and nonsubstituted units were integrated in equimolar amounts on the edge aromatic units, where they mediated two-electron O2 photoreduction. F-substitution created an abundance of Lewis acid sites, which regulated the electronic distribution of adjacent carbon atoms and provided highly active sites for O2 adsorption, and widened the visible-light-responsive range of the catalyst, while enhancing charge separation. Varying the proportion of F maximized the interlayer interactions of TF50 -COF, resulting in improved crystallinity with faster carrier transfer and robust photostability. The TF50 -COF catalyst demonstrates high selectivity and stability in O2 photoreduction into H2 O2 , with a high H2 O2 yield rate of 1739 μmol h-1 g-1 and a remarkable apparent quantum efficiency of 5.1 % at 400 nm, exceeding the performance of previously reported nonmetal COF-based photocatalysts.
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Affiliation(s)
- Haozhen Wang
- Key Laboratory of Cluster Science, Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Chao Yang
- Laboratory of Advanced Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Faculty of Chemistry and Materials Science, Fudan University, Shanghai, 200438, China
| | - Fangshuai Chen
- Key Laboratory of Cluster Science, Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Gengfeng Zheng
- Laboratory of Advanced Materials, Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Faculty of Chemistry and Materials Science, Fudan University, Shanghai, 200438, China
| | - Qing Han
- Key Laboratory of Cluster Science, Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Ministry of Education of China, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
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8
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Few-layer carbon nitride photocatalysts for solar fuels and chemicals: Current status and prospects. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63985-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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9
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Wang H, Yang C, Chen F, Zheng G, Han Q. A Crystalline Partially Fluorinated Triazine Covalent Organic Framework for Efficient Photosynthesis of Hydrogen Peroxide. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Haozhen Wang
- Key Laboratory of Cluster Science Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Ministry of Education of China School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Chao Yang
- Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Faculty of Chemistry and Materials Science Fudan University Shanghai 200438 China
| | - Fangshuai Chen
- Key Laboratory of Cluster Science Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Ministry of Education of China School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
| | - Gengfeng Zheng
- Laboratory of Advanced Materials Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Faculty of Chemistry and Materials Science Fudan University Shanghai 200438 China
| | - Qing Han
- Key Laboratory of Cluster Science Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials Ministry of Education of China School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 100081 China
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Antonangelo AR, Hawkins N, Carta M. Polymers of intrinsic microporosity (PIMs) for catalysis: a perspective. Curr Opin Chem Eng 2022. [DOI: 10.1016/j.coche.2021.100766] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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