Electrocatalytic reduction of oxalic acid on platinum based Pb-Sb surface alloy electrode

被引：7

作者：

Xia, SQ ^{[1
]}

Chen, SP ^{[1
]}

Sun, SG ^{[1
]}

机构：

[1] Xiamen Univ, Dept Chem, Inst Phys Chem, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2001年 / 17卷 / 02期

关键词：

Sb-Pb-Pt/GC surface alloy electrode; oxalic acid; glyoxylic acid; electrocatalytic reduction;

D O I：

10.3866/PKU.WHXB20010210

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 platinum based Pb-Sb surface alloy supported on glassy carbon prepared by electrochemical codeposition has been applied to the reduction of oxalic acid. The results demonstrated that the surface alloy electrode exhibited a high activity, and reduced significantly the overpotential. In comparison with a lead cathode that was used usually in industry for the reduction of oxalic acid, the onset potential of oxalic acid reduction was shifted positively from -1.0 V on Pb to -0.4 V on the surface alloy electrode. The main product species were determined as glyoxylic acid by using in situ FTIR spectroscopy, illustrating that the surface alloy electrode exhibited also a high selectivity towards oxalic acid reduction.

引用

页码：140 / 143

页数：4