journal article·2021-07

Tailoring Unsymmetrical‐Coordinated Atomic Site in Oxide‐Supported Pt Catalysts for Enhanced Surface Activity and Stability

Zhenggang Xue, Muyu Yan, Xiaolin Wang, Zhiyuan Wang, Yan Zhang, Yuhuan Li, Wenjie Xu, Yujing Tong, Xiao Han, Can Xiong, Wenyu Wang, Min Chen, Bangjiao Ye, Xun Hong, Li Song, Hongjun Zhang, Li‐Ming Yang, Yuen Wu

Small· Volume 17· Issue 30
Publisher page

Abstract

Abstract The catalytic properties of supported metal heterostructures critically depend on the design of metal sites. Although it is well‐known that the supports can influence the catalytic activities of metals, precisely regulating the metal–support interactions to achieve highly active and durable catalysts still remain challenging. Here, the authors develop a support effect in the oxide‐supported metal monomers (involving Pt, Cu, and Ni) catalysts by means of engineering nitrogen‐assisted nanopocket sites. It is found that the nitrogen‐permeating process can induce the reconstitution of vacancy interface, resulting in an unsymmetrical atomic arrangement around the vacancy center. The resultant vacancy framework is more beneficial to stabilize Pt monomers and prevent diffusion, which can be further verified by the density functional theory calculations. The final Pt–N/SnO2 catalysts exhibit superior activity and stability for HCHO response (26.5 to 15 ppm). This higher activity allows the reaction to proceed at a lower operating temperature (100 °C). Incorporated with wireless intelligent‐sensing system, the Pt–N/SnO2 catalysts can further achieve continuous monitoring of HCHO levels and cloud‐based terminal data storage.
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Research context

OpenAlex topics: Catalytic Processes in Materials Science · Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors

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

Affiliations

Hefei National Laboratory for Physical Sciences at the Microscale Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230026 China

Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Materials Chemistry and Service Failure Hubei Engineering Research Center for Biomaterials and Medical Protective Materials School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China

State Key Laboratory of Particle Detection and Electronics and Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China

National Synchrotron Radiation Laboratory CAS Center for Excellence in Nanoscience University of Science and Technology of China Hefei 230026 China

Dalian National Laboratory for Clean Energy Dalian 116023 China

Funding

National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · Beijing Synchrotron Radiation Facility · National Synchrotron Radiation Laboratory

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