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The electrochemical properties of thionine adsorbed monolayer on gold electrode

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Wuhan University Journal of Natural Sciences

Abstract

A gold electrode modified with adsorbed thionine monolayer was investigated with ac impedance and cyclic voltammetry method. It was found there were some different redox properties for the adsorbed thionine depended on the different potential scanning rate. At the slower potential scanning rate (10 mV· s−1), the dimer of thionine appeared and possessed the catalytic activity for the oxidation of ascorbic acid. The underpotential deposition (UPD) and the bulk deposition of Cu2+ were also employed to investigate the monolayer of adsorbed thionine.

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Authors and Affiliations

  1. College of Chemistry and Molecular Science, Wuhan University, 430072, Wuhan, China

    Fang Cheng, Liu Yue-lin & Zhou Xing-yao

Authors
  1. Fang Cheng
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  2. Liu Yue-lin
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  3. Zhou Xing-yao
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Additional information

Biography: Fang Cheng (1971-), male, Ph. D candidate, research direction: electroanalysis.

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Cheng, F., Yue-lin, L. & Xing-yao, Z. The electrochemical properties of thionine adsorbed monolayer on gold electrode. Wuhan Univ. J. Nat. Sci. 6, 846–850 (2001). https://doi.org/10.1007/BF02850916

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  • DOI: https://doi.org/10.1007/BF02850916

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