ELECTROCATALYTIC OXIDATION OF AS(III) .2. KINETIC-STUDIES AT PT ELECTRODES

被引：12
作者：
CABELKA, TD
AUSTIN, DS
JOHNSON, DC
机构：
[1] IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM,AMES,IA 50011
[2] IOWA STATE UNIV SCI & TECHNOL,US DOE,AMES LAB,AMES,IA 50011
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1985年 / 132卷 / 02期
关键词：
ARSENIC COMPOUNDS - Oxidation - CATALYSIS - Electrochemistry - CHEMICAL REACTIONS - Reaction Kinetics;
D O I：
10.1149/1.2113838
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The empirical rate law for the electrocatalyzed oxidation of As(III) at a Pt rotating disc electrode in acidic media was determined from potentiostatic measurements. It is PtOH and not PtO that is the active agent for oxygen-atom transfer in the electrocatalytic mechanism. It is concluded that the generation of OH at a highly oxidized Pt surface occurs at a rate independent of applied potential.
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页码：359 / 366
页数：8
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