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author:

Li, Y.-H. (Li, Y.-H..) [1] | Huang, Z.-S. (Huang, Z.-S..) [2] | Qi, M.-Y. (Qi, M.-Y..) [3] | Tang, Z.-R. (Tang, Z.-R..) [4] (Scholars:唐紫蓉)

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Scopus

Abstract:

Reducing the size of metal nanoparticle (NP) cocatalyst down to single-atom level to improve photocatalytic efficiency is inevitably accompanied by the changes of its coordination environment, geometric configuration, electronic structure and active site. Thus, the construction of single metal atom (SA) photocatalyst is not necessarily a panacea for activity improvement toward target catalytic reactions. Herein, we report a critical and benchmark comparison in a reasonable framework of ZnIn2S4/Pt NP (ZIS/Pt NP) and ZnIn2S4/Pt SA (ZIS/Pt SA) towards photocatalytic hydrogen (H2) evolution, aiming to demonstrate which is better between Pt NP and Pt SA as cocatalyst in boosting photoredox catalysis. Mechanism study proves that the higher charge separation/transfer and weaker H* adsorption strength over ZIS/Pt NP than ZIS/Pt SA promote the more effective reduction of protons to H2, leading to the higher activity of ZIS/Pt NP than ZIS/Pt SA. Our work is expected to timely inspire the critical and rational thinking on the function and intrinsic mechanism of SA and NP cocatalysts in enhancing the photoredox catalysis performance. © 2024 Elsevier B.V.

Keyword:

Charge transfer Photoredox catalysis Proton adsorption Pt nanoparticle Pt single atom

Community:

  • [ 1 ] [Li Y.-H.]College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
  • [ 2 ] [Huang Z.-S.]College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China
  • [ 3 ] [Qi M.-Y.]Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 611731, China
  • [ 4 ] [Tang Z.-R.]College of Chemistry, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, 350116, China

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Source :

Molecular Catalysis

ISSN: 2468-8231

Year: 2024

Volume: 567

3 . 9 0 0

JCR@2023

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 27

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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