From anion adsorption to interfacial pH

报告题目：From anion adsorption to interfacial pH
报告人：  Prof. J. M. Feliu
          University of Alicante, Spain
时间：    10月27日（周二) 下午4:40
地点：    卢嘉锡楼报告厅（202）

以下是报告的摘要部分：

Abstract
In Electrochemistry we mostly consider the interface between a metal in contact with an ionic solution, the properties of the latter being those of the bulk solution. To get information on this point, surface charge transfer will be analyzed by using CO displacement and the existence of two processes will be demonstrated: hydrogen and anion adsorption. In this way anion-related adsorption properties can be measured. Combination of different techniques will allow to show that surface pK of organic acids is lower than in bulk solution. This framework can be extended to water, combining interfacial charge and coulostatic temperature transients. The results suggest that interfacial neutral conditions are more acidic than in solution. The temperature transient method can be extended to interfaces between single crystal electrodes in contact to purified ionic liquids. The results will be compared with classical potential of zero charge values.

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2015年10月26日