Electrocatalytic Oxidation of Formaidehyde and Formic Acid on a Pt/Sb_ad Electrode

Authors

Hong Li, Department of Chemistry, South China Normal University, Guangzhou 510631
Lincai Jiang, Department of Chemistry, South China Normal University, Guangzhou 510631
Xiong Jiang, Department of Chemistry, South China Normal University, Guangzhou 510631

Corresponding Author

Hong Li

Abstract

The electrocatalytic activity for the oxidation of formaldehyde and formic acid ona Sb-modified platinum (Pt/Sb_ad) was investigated. Results showed that the Pt/Sb_ad electrode was electrocatalytically more active than a Pt electrode in the anodic oxidation of formaldehyde and formicacid. In the case of formaldehyde, an oxidation peak appeared at a potential of ca. 0.7V. During the oxidation of formic acid, a 4-fold increase in the 1st peak current was observed. The Sb-modified platinum electrode was found to be most electrocatalytically active at a coverage of 0.75±0.05. The electrocatalytic activity of the Pt/Sb_ad electrode can be best explained in terms of the geometrical effect, which may lead to the inhibition of the formation of the adsorbed poison Pt-C=O.The reaction mechanism for the catalytic oxidation of the two subetances at a lower potential on a Pt/Sb_ad electrode was suggested. The effects of other factors including electrolysis time, deposition potential and media on the electrocatalytic activity were also studied and discussed.

Keywords

Electrocatalytic oxidation, Adsorbed antimony atom, Underpotentialdeposition, Platinum electrode, Formaldehyde

DOI Link

https://doi.org/10.61558/2993-074X.1264

Publication Date

1995-02-28

Online Available Date

1995-02-28

Revised Date

1994-07-31

Received Date

1994-06-06

Recommended Citation

Hong Li, Lincai Jiang, Xiong Jiang. Electrocatalytic Oxidation of Formaidehyde and Formic Acid on a Pt/Sb_ad Electrode[J]. Journal of Electrochemistry, 1995 , 1(1): 56-64.
DOI: 10.61558/2993-074X.1264
Available at: https://jelectrochem.xmu.edu.cn/journal/vol1/iss1/9