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Analytical Letters Volume 43, 2010 - Issue 6
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ELECTROCHEMISTRY

Electro-Oxidation of Methane on Roughened Palladium Electrode in Acidic Electrolytes at Ambient Temperatures

Yan Zhang Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China
,
Liqin Zhang Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China; Center of Shanxi Environmental Monitor, Taiyuan, China
,
Shaomin Shuang Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China
,
Feng Feng Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China
,
Jie Qiao Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China
,
Yujing Guo Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, China
,
Martin M. F. Choi Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong, ChinaCorrespondence[email protected]
&
Chuan Dong Research Center of Environmental Science and Engineering, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan, ChinaCorrespondence[email protected]
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Pages 1055-1065 | Received 06 May 2009, Accepted 08 Aug 2009, Published online: 11 Mar 2010
 
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Abstract

The aim of this research is to investigate the electro-oxidation of methane on roughened Pd electrode (RP) in acidic media. The results showed that RP electrode has large surface-to-volume ratio, good reversibility, and facile electron transfer kinetics. Electro-oxidation of methane on RP electrode was studied by cyclic voltammetry and differential pulse voltammetry. Higher electro-catalytic activity and shorter response time for methane oxidation were found on the RP electrode in acidic media at ambient temperatures than those found on the smooth Pd electrode. Differential pulse voltammetry was employed to study the response of RP electrode to various concentrations of methane. The increase in peak current was monitored and related to the methane concentration. The mechanisms for electro-oxidation of methane on RP electrode were also discussed.

The authors acknowledge the Key Project of National Natural Science Foundation of China (No. 50534100) and the Graduate Outstanding Innovation Project of Shanxi Province (No. 20081028).

Notes

a An average of three determinations.

a An average of three determinations.

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