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Liu S, Yang H, Zhang Y, Wang F, Qin Q, Wang D, Huang C, Zhang YY. Robust cooperative of cadmium sulfide with highly ordered hollow microstructure coordination polymers for regulating the photocatalytic performance. J Colloid Interface Sci 2024; 663:919-929. [PMID: 38447406 DOI: 10.1016/j.jcis.2024.02.220] [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: 11/28/2023] [Revised: 02/26/2024] [Accepted: 02/29/2024] [Indexed: 03/08/2024]
Abstract
Accurately controlling and achieving selective reactivity at difficult-to-access reaction sites in organic molecules is challenging owing to the similar local and electronic environments of multiple reaction sites. In this work, we regulated multiple reaction sites in a highly selective and active manner using cobalt coordination polymers (Co-CP) 1 and 1a with various particle sizes and morphologies ranging from large granular to ordered hollow hemispheres by introducing sodium dodecyl sulfate (SDS) as a surfactant. The size and morphology of the catalysts could be tuned by controlling the amount of SDS. An SDS concentration of 0.03 mmol generated 1a having a highly ordered hollow hemispherical microstructure with a well-defined platform as a pre-made building unit. Cadmium sulfide (CdS), as a typical photocatalyst, was subsequently uniformly anchored in-situ on the premade building unit 1a to produce CdS@1a composites, that inherited the originally ordered hollow hemispherical microstructure while integrating CdS as well-dispersed catalytic active sites. Furthermore, the well-established CdS@1a composites were used as photocatalysts in selective oxidation reactions under air atmosphere with blue irradiation. The CdS0.109@1a composite with unique structural characteristics, including uniformly distributed and easily accessible catalytic sites and excellent photoelectrochemical performance, served as a highly efficient heterogeneous photocatalyst for promoting the selective oxidation of sulfides to sulfoxides as the sole products. This work presents an approach for fabricating CPs as premade building units that function as well-defined platforms for integration with photocatalysts, enabling tuning of the structure-selectivity-activity relationships.
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Affiliation(s)
- Saiwei Liu
- Center for Advanced Materials Research and Henan Key Laboratory of Functional Salt Materials, Zhongyuan University of Technology, Zhengzhou 450007, China; School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Haiyan Yang
- Center for Advanced Materials Research and Henan Key Laboratory of Functional Salt Materials, Zhongyuan University of Technology, Zhengzhou 450007, China; School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China.
| | - Yue Zhang
- Center for Advanced Materials Research and Henan Key Laboratory of Functional Salt Materials, Zhongyuan University of Technology, Zhengzhou 450007, China; School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Fei Wang
- Center for Advanced Materials Research and Henan Key Laboratory of Functional Salt Materials, Zhongyuan University of Technology, Zhengzhou 450007, China; School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Qi Qin
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Dandan Wang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China
| | - Chao Huang
- Center for Advanced Materials Research and Henan Key Laboratory of Functional Salt Materials, Zhongyuan University of Technology, Zhengzhou 450007, China.
| | - Ying-Ying Zhang
- Center for Advanced Materials Research and Henan Key Laboratory of Functional Salt Materials, Zhongyuan University of Technology, Zhengzhou 450007, China.
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2
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Li J, Liu T, Singh N, Huang Z, Ding Y, Huang J, Sudarsanam P, Li H. Photocatalytic C-N bond construction toward high-value nitrogenous chemicals. Chem Commun (Camb) 2023; 59:14341-14352. [PMID: 37987689 DOI: 10.1039/d3cc04771g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
The construction of carbon-nitrogen bonds is vital for producing versatile nitrogenous compounds for the chemical and pharmaceutical industries. Among developed synthetic approaches to nitrogenous chemicals, photocatalysis is particularly prominent and has become one of the emerging fields due to its unique advantages of eco-sustainable characteristics, efficient process integration, no need for high-pressure H2, and tunable synthesis methods for developing advanced photocatalytic materials. Here, the review focuses on potential photocatalytic protocols developed for the construction of robust carbon-nitrogen bonds in discrepant activation environments to produce high-value nitrogenous chemicals. The photocatalytic C-N bond construction strategies and involved reaction mechanisms are elucidated.
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Affiliation(s)
- Jie Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Tengyu Liu
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Nittan Singh
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411 008, India
| | - Zhuochun Huang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Yan Ding
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Jinshu Huang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.
| | - Putla Sudarsanam
- Department of Chemistry, Indian Institute of Technology Hyderabad, Kandi, Sangareddy 502284, India.
| | - Hu Li
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, Guizhou University, Guiyang 550025, China.
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3
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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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Yang Z, Wang L, Fang M, Xia X, Liu Y. Efficient spatial separation of charge carriers over CoS1+x cocatalyst modified MIL-88B (Fe)/ZnIn2S4 S-scheme heterojunctions for photoredox dual reaction and insight into the charge-transfer mechanism. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Efficient Acceptorless Dehydrogenation of 5-Hydroxymethylfurfural (HMF) to 2,5-Diformylfuran (DFF) over Pt/CdS under Visible Light. J Catal 2022. [DOI: 10.1016/j.jcat.2022.12.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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6
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Ba J, Cheng H, Li Z, Yu X, Song A, Xu C, Fan D, Jin S. Evolutionary mechanism of Ni-ZIF/CdS calcination for efficient photocatalytic hydrogen evolution. J Catal 2022. [DOI: 10.1016/j.jcat.2022.09.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Liu X, Dai D, Cui Z, Zhang Q, Gong X, Wang Z, Liu Y, Zheng Z, Cheng H, Dai Y, Huang B, Wang P. Optimizing the Reaction Pathway by Active Site Regulation in the CdS/Fe 2O 3 Z-Scheme Heterojunction System for Highly Selective Photocatalytic Benzylamine Oxidation Integrated with H 2 Production. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiaolei Liu
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Dujuan Dai
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zihao Cui
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Qianqian Zhang
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Xueqin Gong
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zeyan Wang
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Yuanyuan Liu
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Zhaoke Zheng
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Hefeng Cheng
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Ying Dai
- School of Physics, Shandong University, Jinan 250100, China
| | - Baibiao Huang
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
| | - Peng Wang
- State Key Lab of Crystal Materials, Shandong University, Jinan 250100, China
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8
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Lower oxygen vacancy concentration in BiPO4 with unexpected higher photocatalytic activity. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.107844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Lu E, Zhang Z, Tao J, Yu Z, Hou Y, Zhang J. Enhanced Metal–Semiconductor Interaction for Photocatalytic Hydrogen‐Evolution Reaction. Chemistry 2022; 28:e202201590. [DOI: 10.1002/chem.202201590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Erjun Lu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P.R. China
| | - Zhixiang Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P.R. China
| | - Junqian Tao
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P.R. China
| | - Zhiyang Yu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P.R. China
| | - Yidong Hou
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P.R. China
| | - Jinshui Zhang
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 P.R. China
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11
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Song L, Zhang S, Liu D, Yang H, Wei J. Temperature-controlled ultra-high hydrogen evolution photocatalytic activity of cadmium sulfide without cocatalysts. J Colloid Interface Sci 2022; 608:366-377. [PMID: 34626982 DOI: 10.1016/j.jcis.2021.09.135] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/12/2021] [Accepted: 09/22/2021] [Indexed: 11/24/2022]
Abstract
Photocatalytic water spitting is one way of hydrogen production from energy conservation and emission reduction. However, the activities of most photocatalytic materials need to be enhanced by cocatalysts. In this study, we explored to control the photocatalytic hydrogen evolution (PHE) ability of cadmium sulfide (CdS) without any cocatalysts by temperature and largely improve its photocatalytic ability. It was experimentally found the activity of CdS without cocatalysts under heating conditions (<100 °C) was much higher than that at room temperature, and increased first and then decreased, with a maximum at 50 °C (169716 umol/h, 68.2 % , λ = 450 nm). Therefore, it is convenient to control the hydrogen production activity of CdS by temperature. The large increment of photocatalytic activity was realized because the temperature complemented the shortcomings of semiconductors in light absorption, and together with light radiation, increased the electron migration rate and density, quantity of surface adsorbed H3O+ and number of active sites, prolonged the living of electrons, and reduced the overpotential of water splitting and the reverse reactions. Heating brings the above advantages, but also exacerbates the recombination of electron-hole pairs. Therefore, the activity shows an extreme value along with the temperature rise. This work experimentally proves temperature control is one of the most efficient and simple ways to largely enhance the PHE ability.
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Affiliation(s)
- Limin Song
- School of Chemistry & State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China.
| | - Shujuan Zhang
- College of Basic Sciences, Tianjin Agricultural University, Tianjin, 300384, PR China.
| | - Dan Liu
- School of Chemistry & State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China
| | - Huanhuan Yang
- School of Chemistry & State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin 300387, PR China
| | - Junfu Wei
- School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, PR China
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12
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Efficient solar-light photocatalytic H2 evolution of Mn0.5Cd0.5S coupling with S,N-codoped carbon. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2021.10.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Li M, Pan Q, Xiao M, Xiong J. Highly dispersed NiS 2 quantum dots as a promising cocatalyst bridged by acetylene black significantly improved the photocatalytic H 2 evolution performance of g-C 3N 4 nanosheets. RSC Adv 2022; 12:2603-2611. [PMID: 35425292 PMCID: PMC8979214 DOI: 10.1039/d1ra07110f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 12/18/2021] [Indexed: 11/21/2022] Open
Abstract
In this work, ternary nanocomposite (CNs-AB/NiS2) as a novel efficient H2 evolution photocatalyst without the use of noble metals was successfully synthesized by depositing acetylene black (AB) and ultra-fine NiS2 nanoparticles on the surface of CNs (g-C3N4) through ultrasonic dispersion and chemical vapor deposition methods, respectively. It was revealed that the loaded AB and NiS2 nanoparticles have significantly improved the photocatalytic H2 evolution efficiency of the CNs by improving the photogenerated electron-hole pair separation, visible light absorption and hydrogen evolution kinetics. Besides acting as a cocatalyst, AB served as a conductive electron bridge between CNs and NiS2, which accelerated the effective transfer of electrons from CNs to NiS2 and improved the H2 evolution kinetics of the NiS2 cocatalyst. The H2 evolution experiments revealed that the ternary photocatalyst CNs-AB/NiS210 displayed a H2 evolution rate of up to 2434.85 μmoL g-1 h-1, which was a 1.41 times enhancement compared to that of the binary composite CNs-NiS210 and was 12.43 times higher than that of the pure CNs. Moreover, the ternary photocatalyst CNs-AB/NiS210 not only exhibited excellent photocatalytic activity and stability in the tests, but provided a novel idea for the development of high-efficiency catalysts free of noble metals as well.
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Affiliation(s)
- Miaomiao Li
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
| | - Qilin Pan
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
| | - Mucang Xiao
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
| | - Jianwen Xiong
- School of Physics and Telecommunication Engineering, South China Normal University Guangzhou 510631 Guangdong China +86 020 85216860
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Molybdenum disulfide loading on a Z-scheme graphitic carbon nitride and lanthanum nickelate heterojunction for enhanced photocatalysis: Interfacial charge transfer and mechanistic insights. J Colloid Interface Sci 2022; 611:684-694. [PMID: 34974228 DOI: 10.1016/j.jcis.2021.12.106] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 12/10/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022]
Abstract
Interfacial design and the co-catalyst effect are considered to be effective to achieve separation and transport of photogenerated carriers in composite photocatalysts. In this study, a Z-scheme heterojunction was successfully combined with a co-catalyst to achieve a highly efficient LaNiO3/g-C3N4/MoS2 photocatalyst. MoS2 flakes were loaded on a hybrid material surface, which was formed by LaNiO3 nanocubes embedded on layered g-C3N4, and a good heterostructure with multiple attachment sites was obtained. Experimental studies confirmed that the Z-scheme heterojunction completely preserves the strong redox ability of the photogenerated electrons and holes. As a cocatalyst, MoS2 further promoted interfacial charge separation and transport. The synergistic effect of the Z-scheme heterojunction and co-catalyst effectively realized the transfer of photogenerated carriers from "slow transfer" to "high transfer" and promoted water decomposition and pollutant degradation. Results revealed that under simulated sunlight irradiation, LaNiO3/g-C3N4/MoS2 composites exhibit superior hydrogen evolution of 45.1 μmol h-1, which is 19.1 times that of g-C3N4 and 4.9 times that of LaNiO3/g-C3N4, respectively. Moreover, the LaNiO3/g-C3N4/MoS2 Z-scheme photocatalyst exhibited excellent photocatalytic performance for antibiotic degradation and heavy-metal ion reduction under visible light. This study might provide some insights into the development of photocatalysts for solar energy conversion and environmental remediation.
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Hu Z, Li Y, Gan C, Sheng M, Sun B, Jiang H. Photocatalytic C–H activation for C–C/CN/C–S bond formation over CdS: effect of morphological regulation and S vacancies. Catal Sci Technol 2022. [DOI: 10.1039/d2cy01432g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CdS catalytic materials were utilized to fabricate C–C, CN and C–S bonds for drug intermediates or other value-added products through the high bond energy, low polarity and strong inertia C–H bonds activation.
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Affiliation(s)
- Zujie Hu
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, P.R. China
| | - Yue Li
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, P.R. China
| | - Chuan Gan
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, P.R. China
| | - Meilin Sheng
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, P.R. China
| | - Bin Sun
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, P.R. China
| | - Heyan Jiang
- Key Laboratory of Catalysis Science and Technology of Chongqing Education Commission, Chongqing Key Laboratory of Catalysis and New Environmental Materials, Chongqing Technology and Business University, Chongqing 400067, P.R. China
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Quan Y, Wang G, Li D, Jin Z. CdS Reinforced with CoS X /NiCo-LDH Core-shell Co-catalyst Demonstrate High Photocatalytic Hydrogen Evolution and Durability in Anhydrous Ethanol. Chemistry 2021; 27:16448-16460. [PMID: 34519374 DOI: 10.1002/chem.202102726] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Indexed: 11/10/2022]
Abstract
At present, inefficient charge separation of single photocatalyst impedes the development of photocatalytic hydrogen evolution. In this work, the CoSX /NiCo-LDH core-shell co-catalyst was cleverly designed, which exhibit high activity and high stability of hydrogen evolution in anhydrous ethanol system when coupled with CdS. Under visible light (λ≥420 nm) irradiation, the 3 %Co/NiCo/CdS composite photocatalyst exhibits a surprisingly high photocatalytic hydrogen evolution rate of 20.67 mmol g-1 h-1 , which is 59 times than that of the original CdS. Continuous light for 20 h still showed good cycle stability. In addition, the 3 %Co/NiCo/CdS composite catalyst also shows good hydrogen evolution performance under the Na2 S/Na2 SO3 and lactic acid system. The fluorescence (PL), ultraviolet-visible diffuse reflectance (UV-vis) and photoelectrochemical tests show that the coupling of CdS and CoSX /NiCo-LDH not only accelerates the effective transfer of charges, but also greatly increases the absorption range of CdS to visible light. Therefore, the hydrogen evolution activity of the composite photocatalyst has been significantly improved. This work will provide new insights for the construction of new co-catalysts and the development of composite catalysts for hydrogen evolution in multiple systems.
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Affiliation(s)
- Yongkang Quan
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, P. R. China.,Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan, 750021, P.R.China.,Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021, P. R. China
| | - Guorong Wang
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, P. R. China.,Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan, 750021, P.R.China.,Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021, P. R. China
| | - Dujuan Li
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, P. R. China.,Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan, 750021, P.R.China.,Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021, P. R. China
| | - Zhiliang Jin
- School of Chemistry and Chemical Engineering, North Minzu University, Yinchuan, 750021, P. R. China.,Ningxia Key Laboratory of Solar Chemical Conversion Technology, North Minzu University, Yinchuan, 750021, P.R.China.,Key Laboratory for Chemical Engineering and Technology, State Ethnic Affairs Commission, North Minzu University, Yinchuan, 750021, P. R. China
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