纳米团簇
催化作用
配体(生物化学)
电化学
金属
化学
纳米技术
组合化学
催化效率
材料科学
化学工程
电极
物理化学
有机化学
冶金
生物化学
受体
工程类
作者
Jie Wang,Fan Xu,Zhao‐Yang Wang,Shuang‐Quan Zang,Thomas C. W. Mak
标识
DOI:10.1002/anie.202207492
摘要
Subtle tailoring of gold nanoclusters (NCs) could significantly change their physicochemical properties. However, direct comparison of the catalytic performance of gold NCs with identical metal cores but distinct ligand shells is rarely elucidated. In this work, a novel gold NC, Au28 (C2 B10 H11 S)12 (tht)4 Cl4 (Au28 -S), was isolated by a facile self-reducing synthesis. Au28 -S adopts an identical Au28 metal framework to that of the reported alkynyl-protected Au28 -C. The different protective layers lead to distinctions in their electronic structure and optical properties. Furthermore, Au28 -S shows better catalytic activity for the electrochemical reduction of CO2 to CO. Theoretical calculations identified the active sites and shed light on the catalytic mechanism to elucidate the different catalytic performances. This work provides an ideal platform to study the protective layer-activity relationship of gold NCs, and may also provide guidance in the design of metal NC-based catalysts.
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