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Updated: Aug 7, 2025

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
Metal-oxide interactions modulating the activity of active oxygen species on atomically dispersed silver catalysts
Rongtan Li1,2, Conghui Liu1, Yamei Fan1
1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, CAS, Dalian 116023, China. qfu@dicp.ac.cn.
Abstract:
The activity of active oxygen species on supported Ag atoms can be effectively modulated by metal-support interactions using different oxide supports. The strong interaction between Ag and Al2O3 with more electrons transferred from Ag to Al2O3 leads to the formation of more Ag-O2- (superoxide) species, responsible for the selective oxidation of ethylene to ethylene oxide. The relatively weak interaction between Ag and SiO2 induces the generation of Ag-O (atomic oxygen) and Ag-O22- (peroxide) species, which are more active for complete oxidation of CO and ethylene to CO2. This work is of significance for deep understanding of active surface species in atomically dispersed metal catalysts.
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