Ethanol electro-oxidation on a carbon-supported Pt-Mo electrocatalyst: a study by pinhole on-line differential electrochemical mass spectrometry

被引：0
作者：
Kim, Kyong-Mi [1 ]
Ju, Kyong-Sik [1 ]
Pak, Sung-Nam [2 ]
机构：
[1] Kim Il Sung Univ, High Tech Res & Dev Ctr, Pyongyang, North Korea
[2] Kim Il Sung Univ, Fac Energy, Pyongyang, North Korea
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2025年
基金：
中国国家自然科学基金;
关键词：
OXIDATION; CATALYSTS; PLATINUM; ALLOYS; ACID; NANOPARTICLES; PERFORMANCE; RU;
D O I：
10.1039/d5cp01253h
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The ethanol oxidation reaction (EOR) was studied on carbon-supported Pt and Pt-Mo electrocatalysts prepared by the formic acid reduction method following heat-treatment. The catalysts were physically characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The electrocatalytic activity of the Pt/C and Pt-Mo/C electrocatalysts for the EOR was investigated by potentiostatic and potentiodynamic measurements with pinhole on-line differential electrochemical mass spectrometry (PODEMS). The results show that the Pt-Mo/C electrocatalyst compared with Pt/C has higher ethanol oxidation efficiency and, acetaldehyde and acetic acid are majority products during the EOR under the given conditions. The CO2 current efficiencies (CCEs) on the Pt/C and Pt-Mo/C catalysts are 6.9% and 8.8% after calibration of the mass to charge signal m/z = 44, respectively, which reveals that the co-metal molybdenum produces more CO2 for ethanol electrooxidation and promotes the performance of the Pt-based anode catalyst.
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页数：9
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