Solid-liquid interface, scanning electrochemical reactions

Wang, D. Wan, L.-J. 2007. Electrochemical scanning tunneling microscopy Adlayer structure and reaction at solid/liquid interface. J. Phys. Chem. C 111 16109-16130. 

This chapter is concerned with the study of interfacial processes and reactions that occur essentially at electrically insulating interfaces, where the role of the SECM tip is often to induce and monitor the reaction of interest. The work herein is an update of Chapter 12 Probing reactions at solid/liquid interfaces of the first edition of Scanning Electrochemical Microscopy [4] and highlights how the basic principles of the SECM-induced transfer (SECMIT) mode (or equilibrium perturbation mode) and related techniques— notably (multi-) potential step transient methods—can be applied to a wide variety of interfaces where flux measurements have traditionally been difficult. 

Macpherson, J. V., Unwin, P. R. Probing reactions at Solid/Liquid Interfaces, In Scanning Electrochemical Microscopy, Bard, A. J., Mirkin, M. V. (eds.). Marcel Dekker, New York, 2001, Chap. 12, pp. 521-592. 

Michael V. Mirkin is professor of chemistry at Queens College, City University of New York, New York City, New York. His professional interests are in the application of electrochemical methods to solving problans in physical and analytical chemistry and include charge-transfer reactions at solid-liquid and liquid-liquid interfaces, electrochemical kinetics, and nanoelectrochemistry. He has published more than 110 peer-reviewed papers and book chapters and coedited the first monograph on scanning electrochanical microscopy (second edition, 2012). He earned a PhD in electrochemistry (1987) from Kazakh State University (former USSR) and did postdoctoral research at The University of Texas at Austin from 1990 to 1993. 

In Chapter 17, the combination of SECM with other techniqnes has been presented. Hybrid systems, like SECM-AFM, are useful for obtaining more information abont processes at an interface. In addition to these techniques, SECM can be combined with other methodologies that allow further sample analysis and afford the extraction of sample structural information, for instance, by coupling SECM with mass spectrometry (MS). Several approaches for scanning mass spectrometry have been reported for the spatial detection of different species at solid-liqnid, liquid-liquid, or air-solid interface. Both chemical " and electrochemical reactions have been characterized by these means. These approaches are based on the use of concentric capillaries that allow the flux of carrier gas or redox components to the substrate (i.e., through the outer capillary) and the extraction... 

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