High Utilization AuPt Nanoparticles Supported on MWCNTS for Methanol Electro-oxidation in Alkaline Medium

Authors

Xun GUO, Key Laboratory of Organic Optoelectronics and Molecular Engineering,Department of Chemistry,Tsinghua University,Beijing 100084,China;
Dao-jun GUO, Key Laboratory of Organic Optoelectronics and Molecular Engineering,Department of Chemistry,Tsinghua University,Beijing 100084,China;School of Chemistry and Chemical Engineering,Qufu Normal University,Qufu 273165,Shandong,China;
Xin-ping QIU, Key Laboratory of Organic Optoelectronics and Molecular Engineering,Department of Chemistry,Tsinghua University,Beijing 100084,China;
Li-quan CHEN, Key Laboratory of Organic Optoelectronics and Molecular Engineering,Department of Chemistry,Tsinghua University,Beijing 100084,China;
Wen-tao ZHU, Key Laboratory of Organic Optoelectronics and Molecular Engineering,Department of Chemistry,Tsinghua University,Beijing 100084,China;

Abstract

We synthesized gold-platinum electrocatalysts supported on multi-walled carbon nanotubes(MWCNTs) with high utilization by a simple one-step method.A high Pt loading series of bimetallic AuPt/MWCNTs catalysts were prepared by the improved ethylene glycol reduction method,and then were compared in terms of the electrocatalytic activity for methanol electro-oxidation using cyclic voltammetry(CV) and chronoamperometry in alkaline solutions.The structure of AuPt/MWCNTs was characterized by the transmission electron microscopy(TEM),X-ray diffraction(XRD) and energy-dispersive X-ray spectroscopy(EDS).The results showed that the AuPt/MWCNTs catalysts had high Pt utilization,uniform AuPt nanoparticles size and good electrocatalytic activity for methanol electro-oxidation.The effect of Au/Pt mass ratio on electrocatalytic activity was also investigated.The highest peak current and lowest onset potential for methanol electro-oxidation appeared at the Au/Pt/MWCNTS mass ratio of 10∶8∶32.

Keywords

methanol electro-oxidation, ethylene glycol reduction, AuPt nanoparticles, multi-walled carbon nanotubes, direct methanol fuel cell

DOI Link

https://doi.org/10.61558/2993-074X.1951

Publication Date

2009-02-28

Online Available Date

2009-02-28

Revised Date

2009-02-28

Received Date

2009-02-28

Recommended Citation

Xun GUO, Dao-jun GUO, Xin-ping QIU, Li-quan CHEN, Wen-tao ZHU. High Utilization AuPt Nanoparticles Supported on MWCNTS for Methanol Electro-oxidation in Alkaline Medium[J]. Journal of Electrochemistry, 2009 , 15(1): 38-42.
DOI: 10.61558/2993-074X.1951
Available at: https://jelectrochem.xmu.edu.cn/journal/vol15/iss1/10