DataVXSmallPaper
journal article·2022-12

A Tale of Two Sites: Neighboring Atomically Dispersed Pt Sites Cooperatively Remove Trace H2 in CO‐Rich Stream

Yi Rao, Yutong Wu, Xueya Dai, Ya‐Wen Zhang, Gaowu Qin, Wei Qi, Song Li

Small· Volume 18· Issue 51
Publisher page
Source abstract

Abstract

Abstract Single‐atom catalysts (SACs) exhibit distinct catalytic behavior compared with nano‐catalysts because of their unique atomic coordination environment without the direct bonding between identical metal centers. How these single atom sites interact with each other and influence the catalytic performance remains unveiled as designing densely populated but stable SACs is still an enormous challenge to date. Here, a fabrication strategy for embedding high areal density single‐atom Pt sites via a defect engineering approach is demonstrated. Similar to the synergistic mechanism in binuclear homogeneous catalysts, from both experimental and theoretical results, it is proved that electrons would redistribute between the two oxo‐bridged paired Pt sites after hydrogen adsorption on one site, which enables the other Pt site to have high CO oxidation activity at mild‐temperature. The dynamic electronic interaction between neighboring Pt sites is found to be distance dependent. These new SACs with abundant Pt‐O‐Pt paired structures can improve the efficiency of CO chemical purification.
Source: crossref · Quality: baseline

Research context

Catalysis & surfaces

OpenAlex topics: Catalytic Processes in Materials Science · Electrocatalysts for Energy Conversion · Catalysis and Oxidation Reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Lab for Anisotropy and Texture of Materials (MoE) School of Materials Science and Engineering Northeastern University Shenyang 110819 P. R. China

Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 P. R. China

School of Materials Science and Engineering University of Science and Technology of China Shenyang 110016 P. R. China

Beijing National Laboratory for Molecular Sciences State Key Laboratory of Rare Earth Materials Chemistry and Applications Peking University Beijing 100871 P. R. China

Research Center for Metallic Wires Northeastern University Shenyang 110819 P. R. China

Institute for Frontier Technologies of Low‐Carbon Steelmaking Shenyang 110819 P. R. China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities

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