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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Electrochemical Behavior of a Glassy Carbon Electrode Chemically Modified with Nickel Pentacyanonitrosylferrate in Presence of Sulfur Compounds

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Author(s):
Paim, Leonardo L. [1] ; Hammer, Peter [2] ; Stradiotto, Nelson R. [1]
Total Authors: 3
Affiliation:
[1] UNESP, Inst Quim, Dept Quim Analt, BR-14801970 Araraquara, SP - Brazil
[2] UNESP, Inst Quim, Dept Fis Quim, BR-14801970 Araraquara, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Electroanalysis; v. 23, n. 6, p. 1488-1496, JUN 2011.
Web of Science Citations: 1
Abstract

The glassy carbon electrode was modified with a nickel pentacyanonitrosylferrate film by electrodeposition of Ni and subsequent derivatization with NaPCNF. The film was characterized by XPS and electrochemical methods. Cyclic voltammetry of the NiPCNF onto the GC shows a redox couple (Fe(III)/Fe(II)) with E(ol) of 538 mV (I(pa)/I(pc) around 1) and Delta E(p) of 93 mV in 0.5 mol L(-1) KNO(3), with a diffusion-controlled process. There was a decrease of anodic peak currents of the film in the presence of sulfide and 2-propanethiol due to a precipitation reaction on the film surface by nucleophilic attack. (AU)

FAPESP's process: 07/07700-7 - Development of sensors based on modified electrodes with pentacyanonitrosylferrates for determination of sulphur components in natural gas
Grantee:Leonardo Lataro Paim
Support type: Scholarships in Brazil - Doctorate