Studies on Electrochemical Behaviour of Pt Electrode in KCl Solution by In situ STM and EMUV-VRS

Abstract

Abstract: The electrochemical behaviour of Pt polycrystalline electrode in 0.1 mol/L KCl solution was investigated by using in situ scanning tunneling microscopy (STM) and elect rochemically modulated UV-Vis reflection spectroscopy (EMUV-VRS).The results of STM and electrore-flectance effect show that the anodic dissolution/cathodic deposition is a dominant oxidation-reduction process of Pt electrode in the potential regions between 0.0 and 1.0 Vvs.SCE, and that the anodic process involves the formation of surface complex consisting of platinum ions and Cl^- ions, and the heterogeneous dissolution of Pt electrode surface.It is also shown that STM can give much better spatial resolution than EMUV-VRS.

Key words: Platinum, Potassium chloride, Scanning tunneling microscopy, Electroreflectance spectrum

TrendMD:

LUO Jin, LIN Zhong-hua, TIAN Zhao-wu. Studies on Electrochemical Behaviour of Pt Electrode in KCl Solution by In situ STM and EMUV-VRS[J]. Chem. J. Chinese Universities, 1992, 13(5): 662.

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Studies on Electrochemical Behaviour of Pt Electrode in KCl Solution by In situ STM and EMUV-VRS

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