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Nano Research

Article Title

Heterogeneously supported pseudo-single atom Pt as sustainable hydrosilylation catalyst

Authors

Huachao Zai, State Key Laboratory of Heavy Oil, Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing 102249, China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Yizhou Zhao, State Key Laboratory of Heavy Oil, Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing 102249, China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Shanyu Chen, State Key Laboratory of Heavy Oil, Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing 102249, China
Lei Ge, State Key Laboratory of Heavy Oil, Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing 102249, China
Changfeng Chen, State Key Laboratory of Heavy Oil, Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing 102249, China
Qi Chen, Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
Yujing Li, State Key Laboratory of Heavy Oil, Department of Materials Science and Engineering, College of Science, China University of Petroleum, Beijing 102249, China Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

Keywords

hydrosilylation, superparamagnetic, core-shell catalyst, single-atom catalyst, recyclable catalyst

Abstract

ABSTRACT The identification of highly active heterogeneous catalysts to replace their homogeneous counterparts remains a challenge in the case of organic catalysts, especially polymers, in highly viscous reaction systems. In this work, we designed and synthesized a novel, solid-supported, and heterogeneous pseudo-single atom Pt catalyst with high activity and recyclability. Superparamagnetic Fe3O4-SiO2 core–shell nanoparticles (NPs) were used as the substrate. The functionalization of the SiO2 shell with silane coupling agents containing vinyl groups allows stabilizing Pt on the SiO2 surface through complexation. The as-prepared pseudosingle atom Pt displays high activity in the hydrosilylation of allyl-terminated polyether with polymethylhydrosiloxane and could be easily collected by applying a magnetic field. The Pt/vinyl/SiO2/Fe3O4 catalyst can be reused for up to four reaction cycles without appreciable decrease in activity. This work demonstrates a novel strategy for the design of pseudo-single atom noble metal catalysts for processes in high-viscosity media.

Graphical Abstract

Publisher

Tsinghua University Press

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