OXIDATION OF FORMIC-ACID ON PT(111) ELECTRODES MODIFIED BY IRREVERSIBLY ADSORBED TELLURIUM

被引：45
|
作者：
HERRERO, E
LLORCA, MJ
FELIU, JM
ALDAZ, A
机构：
[1] Departament de Química Física, Universitat d'Alacant, E-03080 Alacant
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1995年 / 394卷 / 1-2期
关键词：
FORMIC ACID OXIDATION; PT(111) ELECTRODE; TELLURIUM- MODIFIED ELECTRODE;
D O I：
10.1016/0022-0728(95)03963-H
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The electrocatalytic behaviour of tellurium-modified Pt(lll) electrodes for the oxidation of formic acid was investigated. For the direct oxidation of formic acid, an enhancement of catalysis was observed, yielding a maximum formic acid oxidation current for a tellurium coverage of 0.24. In poison formation experiments, the tellurium adsorbed on the surface inhibited poison formation and accumulation by an electronic effect. A comparison was made with other s(2)p(n) adatoms. It was found that the elements which have a lower work function than platinum inhibit poison formation through a long-range electronic effect when they are adsorbed on the Pt(111) electrode.
引用
收藏
页码：161 / 167
页数：7
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