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 waselectrocatalytically 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 theoxidation of formic acid,a 4-fold increase in the 1st peak current was observed.The Sb-modifiedplatinum electrode was found to be most electrocatalytically active at a coverage of 0.75±0.05.Theelectrocatalytic 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 reactionmechanism for the catalytic oxidation of the two subetances at a lower potential on a Pt/Sb_(ad) electrodewas suggested.The effects of other factors including electrolysis time,deposition potential and mediaon the electrocatalytic activity were also studied and discussed.
Keywords
Electrocatalytic oxidation, Adsorbed antimony atom, Underpotentialdeposition, Platinum electrode, Formaldehyde
Publication Date
1995-02-28
Online Available Date
1995-02-28
Revised Date
1995-02-28
Received Date
1995-02-28
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
Included in
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