Controllable selective anchoring of subnanometric Ru clusters or single-atoms/clusters on tungsten nitride for the hydrogen oxidation  

作　　者：Qijiao Sun Chuanqiang Wu Yiqiang Sun Yuan Shen Lei Zhao Xiaodong Yang Li Yang Yunxiang Lin Keke Mao Kun Xu 

机构地区：[1]School of Chemistry and Chemical Engineering,Key Laboratory of Functional Inorganic Material Chemistry of Anhui Province,Anhui Province Key Laboratory of Chemistry for Inorganic/Organic Hybrid Functionalized Materials,Key Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of Education,Anhui University,Hefei 230601,China [2]Information Materials and Intelligent Sensing Laboratory of Anhui Province,Institutes of Physical Science and Information Technology,Anhui University,Hefei 230601,China [3]School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China [4]School of Energy and Environment,Anhui University of Technology,Ma’anshan 243032,China

出　　处：《Science China Chemistry》2024年第11期3749-3756,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (22375001, 52203289);the Natural Science Foundation of Anhui Province (2208085Y03);the Youth Innovation Team of Higher Education Institutions in Shandong Province (2023KJ105);the Start-up Grant from Anhui University。

摘　　要：The impregnation method in the preparation of metal cluster catalysts typically inadvertently introduces single atoms(SAs) into the substrate. However, the question of whether the introduction of SAs will further improve the catalytic activity of cluster systems for specific reactions such as the hydrogen oxidation reaction(HOR) remains unraveled. Herein, we demonstrate Ru clusters anchored on WN nanowires(RuC/WN) show a higher alkaline HOR catalytic activity in comparison with Ru SAs and nanoclusters(NCs)-coupled catalyst anchored on WN nanowires system(RuC,S/WN). Notably, the RuC/WN exhibits superb intrinsic catalytic activity with a mass-normalized exchange current density of 890 m A mg^(-1)PGM, which is among the top level of well developed Ru-based HOR catalysts. Both theoretical simulation and experimental investigation suggest that RuC/WN owns an optimized H^(*)and OH^(*) reaction intermediates for the alkaline HOR, therefore resulting in the excellent intrinsic HOR catalytic performance.

关 键 词：hydrogen oxidation reaction Ru cluster catalyst Ru single atoms and nanoclusters coupled catalyst tungsten nitride substrate 

分 类 号：O643.36[理学—物理化学] TB383.1[理学—化学]