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Updated: Jan 16, 2026

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Engineering Low-Coordinated Pt Sites through Supported Polyhedral Nanoparticles for Enhanced Low-Temperature Toluene
Xiangwei Zhang1,2, Qingze Chen1,2, Haoyang Fu3
1State Key Laboratory of Advanced Environmental Technology & Guangdong Provincial Key Laboratory of Mineral Physics and Materials, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, P.R. China.
None:
Engineering low-coordinated Pt sites represents a promising strategy to boost catalysis, yet their precise control to optimize structure-activity relationships for volatile organic compounds oxidation remains challenging. Herein, we achieved abundant low-coordinated Pt sites by constructing highly dispersed and well-defined polyhedral Pt nanoparticles on a porous silica support (Pt-APSiO2) for toluene oxidation. The amino-functionalized silica provides coordination environments for [PtCl6]2- precursors that regulate the reduction kinetics to favor polyhedral morphology formation. The resulting Pt-APSiO2 catalyst showed exceptional performance in toluene oxidation with an extremely low T90 of 148 °C. Structural characterization revealed that the polyhedral Pt nanoparticles possessed a reduced coordination number of 7.38, leading to an upward shift in the d-band center to -1.88 eV. This shifts endowed Pt sites with stronger adsorption and activation for both toluene and O2. This work demonstrates the feasibility of morphology-directed synthesis for tailoring active site coordination environments, advancing rational design principles for environmental catalysis.
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