Electrocatalysis at polycrystalline silver in base: an example of the complexity of surface active state behaviour

被引:25
作者
Ahern, AJ [1 ]
Nagle, LC [1 ]
Burke, LD [1 ]
机构
[1] Natl Univ Ireland Univ Coll Cork, Dept Chem, Cork, Ireland
关键词
silver; base; active sites; premonolayer oxidation; electrocatalysis;
D O I
10.1007/s10008-001-0263-2
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Four low-level redox responses, attributed to the involvement of four different types of active surface state (or site) transitions, were observed within the double layer region in the case of polycrystalline silver electrodes in base; there is now independent evidence for such premonolayer behaviour in data reported by other authors. The potentials for each of these transitions were correlated with the onset/termination potentials of different electrocatalytic processes, usually for oxidations or reductions but in some cases for both types. The data obtained are in good agreement with the IHOAM model of electrocatalysis which was outlined earlier for the other Group 11 metals, gold and copper.
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页码:451 / 462
页数:12
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