This article outlines the electrochemical methodology at the interface between two electrolyte solutions ITIES. The fundamental concepts of the thermodynamics in biphasic systems are presented in order to show how ions are distributed between the two adjacent phases, and hence how a Galvani potential difference is established at an ITIES.
This theoretical approach is completed by a review of the analytical methods used at ITIES, namely cyclic voltammetry, dropping electrolyte electrodes, optical techniques and microinterfaces which are the biphasic analogs of microelectrodes. The last part deals with the practical applications that electrochemistry at ITIES has attracted during the last decade in the development of amperometric ion sensors and detectors, in the extraction of metal ions by interfacial formation of a complex and in the assessment of the lipophilicity of ionizable drugs.
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Encyclopedia of Interfacial Chemistry
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Electrochemical sensing and imaging based on ion transfer at liquid/liquid interfaces
Learn more Check out. Abstract This article outlines the electrochemical methodology at the interface between two electrolyte solutions ITIES. ISSN The unique physico-chemical properties of gold nanoparticles portrayed in their chemical stability, the sizedependent electrochemistry, and the unusual optical properties make them suitable modifiers of various surfaces used in the fields of optical devices, electronics, and biosensors. In this work we present two different methods to obtain metallic gold nanoparticles at a liquid—liquid interface, and to control their growth by adjusting the experimental conditions.
Electrochemistry at liquid/liquid interface
The structure and features of the deposited Au nanoparticles were studied by means of microscopic and voltammetric techniques. The morphology of the Au deposit depends on the concentration ratio of redox partners and both electrode and liquid—liquid interfacial potential differences. The possible reasons for the different behavior of the Au nanoparticles are discussed in terms of the structure and the properties of the obtained Au deposit.