Electrocatalytic oxidation of methanol and formic acid on dispersed electrodes: Pt, Pt-Sn and Pt/M(upd) in poly(2-hydroxy-3-aminophenazine)

被引：47

作者：

Kelaidopoulou, A ^{[1
]}

Abelidou, E ^{[1
]}

Kokkinidis, G ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Chem, Phys Chem Lab, Thessaloniki 54006, Greece

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 1999年 / 29卷 / 11期

关键词：

electrooxidation; formic acid; methanol; poly(2-hydroxy-3-aminophenazine); Pt particles; Pt-Sn code-posits; underpotential deposition;

D O I：

10.1023/A:1003796616083

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum particles dispersed in a poly(2-hydroxy-3-aminophenazine) film (pHAPh/Pt) provide a better catalyst than smooth Pt for the electrooxidation of methanol and formic acid in perchloric acid aqueous solutions. The catalytic activity of the Pt particles is further enhanced when Sn is codeposited in the polymer film. In the case of formic acid oxidation, the activity of Pt nanoparticles is influenced by adatoms of Tl, Pb and Bi deposited undepotential conditions. The upd-modified Pt particles are much more active than bare Pt particles. The morphology and identity of the metallic dispersion were examined by transmission electron microscopy.

引用

页码：1255 / 1261

页数：7

共 49 条

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