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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.)

Niobium oxide dispersed on a carbon-ceramic matrix, SiO2/C/Nb2O5, used as an electrochemical ascorbic acid sensor

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Author(s):
Arenas, Leliz T. [1] ; Villis, Paulo C. M. [1] ; Arguello, Jacqueline [2] ; Landers, Richard [3] ; Benvenutti, Edilson V. [2] ; Gushikem, Yoshitaka [1]
Total Authors: 6
Affiliation:
[1] Univ Estadual Campinas, Inst Chem, Campinas, SP - Brazil
[2] Univ Fed Rio Grande do Sul, Inst Chem, Porto Alegre, RS - Brazil
[3] Univ Estadual Campinas, Inst Phys Gleb Wataghin, Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Talanta; v. 83, n. 1, p. 241-248, NOV 15 2010.
Web of Science Citations: 21
Abstract

A film of niobium oxide was immobilized on a SiO(2)/C carbon-ceramic matrix (specific surface area 270 m(2) g(-1)) and characterized by N(2) adsorption-desorption isotherms scanning electron microscopy X-ray photoelectron spectroscopy and atomic force microscopy This new carbon-ceramic material SiO(2)/C/Nb(2)O(5) was used for construction of electrodes and it shows ability to improve the electron-transfer between the electrode surface and ascorbic acid The electrocatalytic oxidation of ascorbic acid was made by differential pulse and cyclic voltammetry techniques making It potentially useful for developing a new ascorbic acid sensor (C) 2010 Elsevier B V All rights reserved (AU)