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Study of the adsorption of cytochrome c on a gold nanoparticle – modified gold electrode by using cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry

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Abstract.

Adsorption of cytochrome c (Cyt c) on a gold nanoparticle – modified gold electrode was studied by using cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry in a phosphate buffer solution. It is shown that the charge transfer resistance is directly proportional to the amount of adsorbed Cyt c. The effects of temperature and time on the course of adsorption were also studied. The trends obtained in ΔGADS showed that Cyt c was found to have a smaller affinity for the modified electrode as indicated by their smaller negative ΔGADS values.

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Authors and Affiliations

  1. Department of Chemistry, Beijing Normal University, 100875, Beijing, China

    Xiaoqin Ding, Meng Yang, Jingbo Hu & Qilong Li

  2. School of Chemical Engineering and Analytical Science, The University of Manchester, M60 1QD, Manchester, UK

    Angus McDougall

Authors
  1. Xiaoqin Ding
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  2. Meng Yang
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  3. Jingbo Hu
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  4. Qilong Li
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  5. Angus McDougall
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Correspondence to Jingbo Hu.

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Ding, X., Yang, M., Hu, J. et al. Study of the adsorption of cytochrome c on a gold nanoparticle – modified gold electrode by using cyclic voltammetry, electrochemical impedance spectroscopy and chronopotentiometry. Microchim Acta 158, 65–71 (2007). https://doi.org/10.1007/s00604-006-0683-x

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  • DOI: https://doi.org/10.1007/s00604-006-0683-x

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