Electronic communications between active sites on individual metallic nanoparticles in catalysis

Dongrun Xu, Yaowei Jin, Bowen He, Xue Fang, Guokang Chen, Weiye Qu, Chenxin Xu, Junxiao Chen, Zhen Ma, Liwei Chen, Xingfu Tang (), Xi Liu (), Guangfeng Wei () and Yaxin Chen ()
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Dongrun Xu: Fudan University
Yaowei Jin: Tongji University
Bowen He: Shanghai Jiao Tong University
Xue Fang: Fudan University
Guokang Chen: Shanghai Jiao Tong University
Weiye Qu: Fudan University
Chenxin Xu: Fudan University
Junxiao Chen: Fudan University
Zhen Ma: Fudan University
Liwei Chen: Shanghai Jiao Tong University
Xingfu Tang: Fudan University
Xi Liu: Shanghai Jiao Tong University
Guangfeng Wei: Tongji University
Yaxin Chen: Fudan University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Catalytic activity of metal particles is reported to originate from the appearance of nonmetallic states, but conductive metallic particles, as an electron reservoir, should render electron delivery between reactants more favorably so as to have higher activity. We present that metallic rhodium particle catalysts are highly active in the low-temperature oxidation of carbon monoxide, whereas nonmetallic rhodium clusters or monoatoms on alumina remain catalytically inert. Experimental and theoretical results evidence the presence of electronic communications in between vertex atom active sites of individual metallic particles in the reaction. The electronic communications dramatically lower apparent activation energies via coupling two electrochemical-like half-reactions occurring on different active sites, which enable the metallic particles to show turnover frequencies at least four orders of magnitude higher than the nonmetallic clusters or monoatoms. Similar results are found for other metallic particle catalysts, implying the importance of electronic communications between active sites in heterogeneous catalysis.

Date: 2024
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DOI: 10.1038/s41467-024-52997-w

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