Mesoporous palladium - the surface electrochemistry of palladium in aqueous sodium hydroxide and the cathodic reduction of nitrite

被引:58
作者
Denuault, G [1 ]
Milhano, C [1 ]
Pletcher, D [1 ]
机构
[1] Univ Southampton, Dept Chem, Southampton SO17, Hants, England
关键词
D O I
10.1039/b508835f
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The voltammetry of nanostructured palladium layers electrodeposited from a hexagonal liquid crystal phase onto platinum microdiscs show well defined peaks for the adsorption/desorption of hydrogen and surface oxidation/reduction in 2 M NaOH. These peaks are more clearly resolved than at smooth palladium and reveal the complications associated with hydrogen adsorption/desorption on palladium in aqueous alkaline solutions. The reduction of nitrite at the nanostructured palladium is also reported and it is shown that it occurs via a mechanism involving a chemical reaction between adsorbed hydrogen and adsorbed nitrite ion.
引用
收藏
页码:3545 / 3551
页数:7
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