The anodic behavior of azide ions on gold and platinum electrodes in neutral electrolyte

被引:17
作者
Dalmia, A [1 ]
Savinell, RF [1 ]
Liu, CC [1 ]
机构
[1] CASE WESTERN RESERVE UNIV,DEPT CHEM ENGN,CLEVELAND,OH 44106
关键词
D O I
10.1149/1.1836911
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The electro-oxidation of azide ions on gold and platinum electrodes in aqueous neutral media was investigated using cyclic voltammetry. Gold in the presence of azide ions undergoes electro-oxidation forming gold azide complexes above +0.1 V vs. Hg/Hg2SO4. Anodic oxidation of azide ions produces gaseous products at potentials above +0.5 V vs. Hg/Hg2SO4. The formation of gold azide complexes by azide electro-oxidation at gold has been reported for the first time. On the other hand, azide ions undergo electro-oxidation at platinum electrodes and yield directly gaseous products at potentials above +0.5 V vs. Hg/Hg2SO4. This difference in the reaction mechanisms of the azide ion electro-oxidation between gold and platinum electrodes is confirmed using electron spectroscopy for chemical analysis measurements and rotating ring-disk experiments. A reaction mechanism is discussed for the electro-oxidation of the azide ions at the gold surface.
引用
收藏
页码:1827 / 1833
页数:7
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