Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film | Zendy

Ester Guaus | Zendy; Juan TorrentBurgués | Zendy

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Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film

Author(s) -

Ester Guaus,

Juan TorrentBurgués

Publication year - 2007

Publication title -

portugaliae electrochimica acta

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.252

H-Index - 27

eISSN - 1647-1571

pISSN - 0872-1904

DOI - 10.4152/pea.200701139

Subject(s) - electrochemistry , electrode , materials science , carbon fibers , composite material , chemistry , composite number

A Langmuir-Schaefer (LS) film of a thiomacrocyclic (ThM) compound was deposited on the surface of a glassy carbon electrode (GCE) rod, from a subphase containing Cu(II) ions. The voltammetric response of this modified GCE when the ThM was bonded to Cu 2+ , showed that the LS film moved the oxidation peaks of copper to more positive values. On the other hand, a LS film of the ThM compound was deposited on the surface of a GCE rod from a subphase of pure water. When the voltammetric response of the GCE-ThM electrode was studied in a Cu 2+ -SO 4 2- solution, it was found that the modified electrode increases its sensitivity respect to Cu 2+ at low bulk Cu 2+ concentrations in solution, and a surface-complexation reaction is proposed to explain the effect of the LS film on the GCE surface.

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