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author:

Qin, C. (Qin, C..) [1] | Wu, X. (Wu, X..) [2] | Tang, L. (Tang, L..) [3] | Chen, X. (Chen, X..) [4] | Li, M. (Li, M..) [5] | Mou, Y. (Mou, Y..) [6] | Su, B. (Su, B..) [7] | Wang, S. (Wang, S..) [8] (Scholars:汪思波) | Feng, C. (Feng, C..) [9] | Liu, J. (Liu, J..) [10] | Yuan, X. (Yuan, X..) [11] | Zhao, Y. (Zhao, Y..) [12] | Wang, H. (Wang, H..) [13]

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Abstract:

Constructing photocatalytically active and stable covalent organic frameworks containing both oxidative and reductive reaction centers remain a challenge. In this study, benzotrithiophene-based covalent organic frameworks with spatially separated redox centers are rationally designed for the photocatalytic production of hydrogen peroxide from water and oxygen without sacrificial agents. The triazine-containing framework demonstrates high selectivity for H2O2 photogeneration, with a yield rate of 2111 μM h−1 (21.11 μmol h−1 and 1407 μmol g−1 h−1) and a solar-to-chemical conversion efficiency of 0.296%. Codirectional charge transfer and large energetic differences between linkages and linkers are verified in the double donor-acceptor structures of periodic frameworks. The active sites are mainly concentrated on the electron-acceptor fragments near the imine bond, which regulate the electron distribution of adjacent carbon atoms to optimally reduce the Gibbs free energy of O2* and OOH* intermediates during the formation of H2O2. © 2023, Springer Nature Limited.

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Community:

  • [ 1 ] [Qin C.]College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
  • [ 2 ] [Wu X.]College of Materials Science and Engineering, Nanjing Tech University, Nanjing, 210009, China
  • [ 3 ] [Tang L.]College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
  • [ 4 ] [Chen X.]School of Frontier Crossover Studies, Hunan University of Technology and Business, Changsha, 410205, China
  • [ 5 ] [Li M.]College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
  • [ 6 ] [Mou Y.]College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
  • [ 7 ] [Su B.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian, 350002, China
  • [ 8 ] [Wang S.]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fujian, 350002, China
  • [ 9 ] [Feng C.]Catalysis Centre, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
  • [ 10 ] [Liu J.]School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
  • [ 11 ] [Yuan X.]College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
  • [ 12 ] [Zhao Y.]School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
  • [ 13 ] [Wang H.]College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), Hunan University, Changsha, 410082, China
  • [ 14 ] [Wang H.]School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore

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Source :

Nature Communications

ISSN: 2041-1723

Year: 2023

Issue: 1

Volume: 14

1 4 . 7

JCR@2023

1 4 . 7 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

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30 Days PV: 0

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