Electrocatalytic Oxidation of Glyoxal on Ti/NanoTiO2-Pt Modified Electrode

被引：3

作者：

Chu Dao-Bao ^{[1
]}

He Jian-Guo ^{[1
]}

Hou Yuan-Yuan ^{[1
]}

Xu Mai ^{[1
]}

Wang Shu-Xi ^{[1
]}

Wang Jian ^{[1
]}

Zha Long-Wu ^{[1
]}

Zhang Xue-Jiao ^{[1
]}

机构：

[1] Anhui Normal Univ, Key Lab Mol Based Mat, Anhui Key Lab Funct Mol Solids, Coll Chem & Mat Sci, Wuhu 241000, Anhui, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2009年 / 25卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Electrocatalysis; Ti/nanoTiO(2)-Pt modified electrode; Direct oxidation; Glyoxal; Glyoxylic acid; MODIFIED TI ELECTRODE; IN-SITU FTIR; GLYOXYLIC-ACID; NANOCRYSTALLINE TIO2; ELECTROCHEMICAL SYNTHESIS; FORMIC-ACID; PLATINUM; REDUCTION; METHANOL; ADSORPTION;

D O I：

10.3866/PKU.WHXB20090751

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：

A nano-TiO2 film electrode loaded with Pt nanoparticles (Ti/nanoTiO(2)-Pt) was prepared by a sol-gel method and electrochemical deposition technique. The formation of an anatase phase of TiO2 was confirmed by X-ray diffraction (XRD). Scanning electron microscopy (SEM) images showed that cluster scattered state Pt particles were distributed on the surface of the multi-nanoporous TiO2 film and the average particle size of Pt particles was about 25 nm. The electrocatalytic oxidation of glyoxal on the Ti/nanoTiO(2)-Pt modified electrode was investigated by cyclic voltammetry (CV) and chronoamperometry. The results showed that the Ti/nanoTiO(2)-Pt modified electrode exhibited significant electrocatalytic activity for the oxidation of glyoxal. The oxidation peak potentials were 0.60 and 1.23 V (vs SCE (saturated calomel electrode)). Current densities were 16 and 42 mA . cm(-2), respectively, and they were about 2 and 1.5 times as high as those of a pure Pt electrode. The reaction process was controlled by concentration diffusion.

引用

页码：1434 / 1438

页数：5

共 29 条

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