Electrochemical activity of glutathione at a graphite electrode modified with gold nanoparticles

D. O. Perevezentseva, K. V. Skirdin, E. V. Gorchakov, V. I. Bimatov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The electrochemical activity of the glutathione (GSH) at the graphite electrodes modified with gold nanoparticles (AuNP-GCE) is formed under the ratio of reactants and in solutions of supporting electrolytes of 0, 1 M NaOH, 0,1 "phosphate buffer (pH 6.86), 0,1 M HCl, 0,1 M NaClO4 is studied by the method of cyclic voltammetry. The dependence of the electrochemical activity of GSH on ratio of reagents HAuCl4:Na3C6H5O7:NaBH4, used to the preparation of sols, and the modification time of the GE surface with gold nanoparticles have been studied. The "inverse" cathodic peak of GSH at AuNPGCE formed in the reaction mixture HAuCl4:Na3C6H5O7:NaBH4= 1:1:4 is observed on the cathodic branch of cyclic voltammogram at Ec = 0.05 V in 0.1 M NaOH. The mechanism of electrochemical oxidation of the GSH on the surface of AuNP-GCE in 0.1 M NaOH is proposed.

Original languageEnglish
Pages (from-to)834-844
Number of pages11
JournalOriental Journal of Chemistry
Volume31
Issue number2
DOIs
Publication statusPublished - 2015

Fingerprint

Graphite electrodes
Graphite
Gold
graphite
Nanoparticles
Glutathione
Electrodes
electrode
gold
Electrochemical oxidation
Polymethyl Methacrylate
electrolyte
Electrolytes
Cyclic voltammetry
Buffers
Phosphates
phosphate
oxidation
acid gold tetrachloride
nanoparticle

Keywords

  • Cyclic voltammetry
  • Glutathione
  • Gold nanoparticles
  • Graphite electrode

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry
  • Environmental Chemistry
  • Drug Discovery

Cite this

Electrochemical activity of glutathione at a graphite electrode modified with gold nanoparticles. / Perevezentseva, D. O.; Skirdin, K. V.; Gorchakov, E. V.; Bimatov, V. I.

In: Oriental Journal of Chemistry, Vol. 31, No. 2, 2015, p. 834-844.

Research output: Contribution to journalArticle

Perevezentseva, D. O. ; Skirdin, K. V. ; Gorchakov, E. V. ; Bimatov, V. I. / Electrochemical activity of glutathione at a graphite electrode modified with gold nanoparticles. In: Oriental Journal of Chemistry. 2015 ; Vol. 31, No. 2. pp. 834-844.
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