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研究论文

次亚磷酸根离子在铂电极上氧化的机理研究(英文)

  • 蒋太祥 ,
  • 吴辉煌
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  • 厦门大学化学化工学院,固体表面物理化学国家重点实验室,厦门大学化学化工学院,固体表面物理化学国家重点实验室 福建厦门361005 ,福建厦门361005

收稿日期: 2002-11-28

  修回日期: 2002-11-28

  网络出版日期: 2002-11-28

Mechanistic Study of Oxidation of Hypophosphite on Pt Electrodes by SNIFTIRS

  • JIANG Tai-xiang ,
  • WU Hui-huang
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  • (Dept. of Chem., State Key Lab. for Phys. Chem. of the Solid Surfaces,Xiamen Univ., Xiamen 361005, China

Received date: 2002-11-28

  Revised date: 2002-11-28

  Online published: 2002-11-28

摘要

用SNIFTIRS和循环伏安法研究次亚磷酸根离子在多晶铂电极上的电氧化机理 .分析了0 .5mol/LH2 SO4 + 0 .1mol/LNaH2 PO2 溶液中原位红外反射谱图与Pt电极电位的关系 ,发现次亚磷酸根离子在Pt上发生解离吸附 ,其氧化产物是H3 PO4 ,不同于在Ni上的氧化产物H2 PO- 3 ,据此提出了酸性溶液中次亚磷酸根离子在Pt上氧化机理的新看法

本文引用格式

蒋太祥 , 吴辉煌 . 次亚磷酸根离子在铂电极上氧化的机理研究(英文)[J]. 电化学, 2002 , 8(4) : 376 -380 . DOI: 10.61558/2993-074X.1467

Abstract

The oxidation of hypophosphite on a polycrystalline platinum electrode was studied by SNIFTIRS and cyclic voltammetry, the in-situ IR spectra were analyzed as a function of Pt electrode potentials in the solution of 0.5 mol/L H 2SO 4+0.1 mol/L NaH 2PO 2. It was found that the dissociative adsorption of hypophosphite ions occurs on Pt surface, and the oxidation product is H 3PO 4, rather than H 2PO 3 - which was considered to produce on Ni electrodes, thereby a new insight into mechanism of hypophosphite oxidation on Pt in acidic media was provided.

参考文献

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