Construction of Dual-Site Atomically Dispersed Electrocatalysts with Ru-C5 Single Atoms and Ru-O4 Nanoclusters for Accelerated Alkali Hydrogen Evolution

被引:97
作者
Cao, Dong [1 ,2 ]
Wang, Jiayi [1 ,2 ]
Xu, Haoxiang [1 ,2 ]
Cheng, Daojian [1 ,2 ]
机构
[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China
[2] Beijing Univ Chem Technol, Beijing Adv Innovat Ctr Soft Matter Sci & Engn, Beijing 100029, Peoples R China
基金
国家重点研发计划; 中国国家自然科学基金;
关键词
alkali hydrogen evolution; multi-active sites; multistep reactions; oxide nanoclusters; single atoms;
D O I
10.1002/smll.202101163
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Rationally integrating multi-active sites into one ideal catalyst is an effective approach to accelerate multistep reactions by synergic catalysis. Herein, a universal and facile room temperature impregnation strategy is developed to construct Ru atomically dispersed catalyst (Ru ADC) with Ru-C-5 single atoms and Ru oxide nanoclusters (approximate to 1.5 nm), which can also be extended to prepare Ir, Rh, Pt, Au, and Mo atomically dispersed catalysts (ADCs). It is found that the obtained Ru ADC largely boosts alkali hydrogen evolution by concerted catalysis between single atoms and sub-nanoclusters, which only needs an overpotential of 18 mV at 10 mA cm(-2). Further mechanistic studies reveal that Ru-C-5 single atoms and Ru oxide nanoclusters with Ru-O-4 configuration in one catalyst can synergically boost water molecule capture, water dissociation, and hydrogen release. This study opens up a simple method to synthesize dual-site metal ADCs for synergic catalysis of typical multistep reactions.
引用
收藏
页数:9
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