Heterogeneously supported pseudo-single atom Pt as sustainable hydrosilylation catalyst

Heterogeneously supported pseudo-single atom Pt

as sustainable hydrosilylation catalyst

Huachao Zai;Yizhou Zhao;Shanyu Chen;Lei Ge;Changfeng Chen;Qi Chen;Yujing Li

【期刊名称】《纳米研究（英文版）》 【年(卷),期】2024(011)005

【摘要】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 Fe304-Si02 core-shell nanoparticles (NPs) were used as the substrate. The functionalization of the Si02 shell with silane coupling agents containing vinyl groups allows stabilizing Pt on the Si02 surface through complexation. The as-prepared pseudo-single 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. 【总页数】9页(2544-2552)