纳米团簇
催化作用
过电位
离解(化学)
氧化物
材料科学
碱金属
氢
无机化学
纳米技术
分解水
化学工程
物理化学
化学
电化学
有机化学
冶金
光催化
电极
工程类
作者
Dong Cao,Jiayi Wang,Haoxiang Xu,Daojian Cheng
出处
期刊:Small
[Wiley]
日期:2021-07-02
卷期号:17 (31)
被引量:74
标识
DOI:10.1002/smll.202101163
摘要
Abstract 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 (≈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.
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