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.

引用

页数：9

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