| Literature DB >> 31436879 |
Jinkyu Park1, Seonggyu Lee2, Hee-Eun Kim1, Ara Cho2, Seongbeen Kim2, Youngjin Ye2, Jeong Woo Han2, Hyunjoo Lee1, Jong Hyun Jang3, Jinwoo Lee1.
Abstract
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 WO3-x (Pt NP/WO3-x ). The results revealed that the support effect was maximized for atomically dispersed Pt supported on WO3-x (Pt SA/WO3-x ). 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 noble metal usage in the field of SACs.Entities:
Keywords: hydrogen evolution; hydrogen spillover; hydrogen tungsten bronze; single-atom catalysts; support effect
Year: 2019 PMID： 31436879 DOI： 10.1002/anie.201908122
Source DB: PubMed Journal: Angew Chem Int Ed Engl ISSN： 1433-7851 Impact factor: 15.336