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Sun F, Song J, Wen H, Cao X, Zhao F, Qin J, Mao W, Tang X, Dong L, Long Y. Ce 4+/Ce 3+ Redox Effect-Promoted CdS/CeO 2 Heterojunction Photocatalyst for the Atom Economic Synthesis of Imines under Visible Light. Inorg Chem 2023; 62:17961-17971. [PMID: 37857562 DOI: 10.1021/acs.inorgchem.3c02907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
The employment of stoichiometric alcohols and amines for imine synthesis under mild and green reaction conditions is still a challenge in the field. In this work, based on our research foundation in the thermocatalytic synthesis of imines over ceria, a CdS/CeO2 heterojunction photocatalyst was constructed and successfully realized the atom-economic synthesis of imines under visible light without additives at room temperature. Mechanistic experiments and corresponding characterizations indicated that the CdS/CeO2 heterojunction can improve the separation efficiency of photogenerated carriers, which can be further enhanced by the Ce4+/Ce3+ redox pair by rapidly combining photogenerated e-. The in situ-reduced Ce3+ can better activate O2 to form Ce-O-O·, which, together with h+, efficiently accelerates alcohol oxidation, which is the rate-determined step for the synthesis of imines via oxidative coupling reaction of alcohol and amine. In addition, our photocatalyst exhibited fairly decent reusability and substrate universality. This work solves problems of using base additives and excess amine or alcohol in the reported photocatalytic systems and provides new insight for designing CeO2-based photocatalytic oxidation catalysts.
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Affiliation(s)
- Fangkun Sun
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jie Song
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - He Wen
- Lanzhou Petrochemical Research Center, Petrochemical Research Institute, PetroChina, Lanzhou 730060, P. R. China
| | - Xiao Cao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Feng Zhao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jiaheng Qin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Weiwen Mao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaoqi Tang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Linkun Dong
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yu Long
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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Chutimasakul T, Tirdtrakool W, Na Nakhonpanom P, Kreethatorn H, Jaruwatee P, Bunchuay T, Tantirungrotechai J. Efficient Synthesis of Imines by Oxidative Coupling Catalyzed by Ce‐Mn Oxide Microspheres. ChemistrySelect 2022. [DOI: 10.1002/slct.202203028] [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]
Affiliation(s)
- Threeraphat Chutimasakul
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
- Nuclear Technology Research and Development Center Thailand Institute of Nuclear Technology (Public Organization) Nakhon Nayok 26120 Thailand
| | - Warinda Tirdtrakool
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
| | - Pakamon Na Nakhonpanom
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
| | - Hemmarat Kreethatorn
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
| | - Pattamaporn Jaruwatee
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
| | - Thanthapatra Bunchuay
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
| | - Jonggol Tantirungrotechai
- Department of Chemistry Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
- Center of Excellence for Innovation in Chemistry, Faculty of Science Mahidol University Rama 6 Road Bangkok 10400 Thailand
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Pirker L, Višić B. Recent Progress in the Synthesis and Potential Applications of Two‐Dimensional Tungsten (Sub)oxides. Isr J Chem 2021. [DOI: 10.1002/ijch.202100074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luka Pirker
- Solid State Physics Jozef Stefan Institute Jamova cesta 39 1000 Ljubljana Slovenia
| | - Bojana Višić
- Solid State Physics Jozef Stefan Institute Jamova cesta 39 1000 Ljubljana Slovenia
- Institute of Physics Belgrade University of Belgrade Pregrevica 118 11080 Belgrade Serbia
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