In situ UV-Vis spectroscopic study of the electrocatalytic oxidation of hypophosphite on a nickel electrode

被引：39
|
作者：
Zeng, Y [1 ]
Zhou, SM
机构：
[1] Hunan Normal Univ, Dept Chem, Changsha 410006, Hunan, Peoples R China
[2] Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surface, Xiamen 361005, Peoples R China
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 1999年 / 1卷 / 06期
基金：
中国国家自然科学基金;
关键词：
in situ UV-Vis subtractive reflectance spectroscopy; electrooxidation; hypophosphite; mechanism;
D O I：
10.1016/S1388-2481(99)00043-0
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrocatalytic oxidation of hypophosphite on a nickel electrode has been studied by means of in situ UV-Vis subtractive reflectance spectroscopy to obtain information about the anodic oxidation mechanism. An absorbency band around 245 nm, which was ascribed to the formation of an intermediate, (PHO2-)-P-., was observed in the electrocatalytic oxidation process. Accordingly, the electrocatalytic oxidation of hypophosphite might undergo a H abstraction of hypophosphite: from the P-H bond to form the phosphorus-centered radical (PHO2-)-P-., which is subsequently reacted with water to form the final product, phosphite. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：217 / 222
页数：6
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