Investigation of the Support Effect in Atomically Dispersed Pt on WO3-x for Utilization of Pt in the Hydrogen Evolution Reaction

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Single-atom catalysts (SACs) have attracted growing attention because they maximize the number of active sites, with unpredictable catalytic activity. Despite numerous studies on SACS, there is little research on the support, which is essential to understanding SAC. Herein, we systematically investigated the influence of the support on the performance of the SAC by comparing with single-atom Pt supported on carbon (Pt SA/C) and Pi nanoparticles supported on WO3-x (Pt NP/WO3-x). The results revealed that the support effect was maximized for atomically dispersed Pt supported on WO3-x SA/11703 The Pt SA/WO3-x exhibited a higher degree of hydrogen spillover from Pt atoms to WO3-x at the interface, compared with Pt NP/WO3-x, which drastically enhanced Pt mass activity for hydrogen evolution (up to 10 times). This strategy provides a new framework for enhancing catalytic activity for HER, by reducing usage in the field of SACs.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2019-11
Language
English
Article Type
Article
Citation

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v.58, no.45, pp.16038 - 16042

ISSN
1433-7851
DOI
10.1002/anie.201908122
URI
http://hdl.handle.net/10203/268827
Appears in Collection
CBE-Journal Papers(저널논문)
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