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Investigation of the Support Effect in Atomically Dispersed Pt on WO 3− x for Utilization of Pt in the Hydrogen Evolution Reaction
Author(s) -
Park Jinkyu,
Lee Seonggyu,
Kim HeeEun,
Cho Ara,
Kim Seongbeen,
Ye Youngjin,
Han Jeong Woo,
Lee Hyunjoo,
Jang Jong Hyun,
Lee Jinwoo
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201908122
Subject(s) - catalysis , hydrogen spillover , hydrogen , materials science , nanotechnology , atom (system on chip) , noble metal , nanoparticle , metal , chemical engineering , crystallography , chemistry , organic chemistry , computer science , metallurgy , engineering , embedded system
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 Pt nanoparticles supported on WO 3− x (Pt NP/WO 3− x ). The results revealed that the support effect was maximized for atomically dispersed Pt supported on WO 3− x (Pt SA/WO 3− x ). The Pt SA/WO 3− x exhibited a higher degree of hydrogen spillover from Pt atoms to WO 3− x at the interface, compared with Pt NP/WO 3− 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 noble metal usage in the field of SACs.