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Type: Artigo de periódico
Title: Niobium oxide dispersed on a carbon-ceramic matrix, SiO2/C/Nb2O5, used as an electrochemical ascorbic acid sensor
Author: Arenas, LT
Villis, PCM
Arguello, J
Landers, R
Benvenutti, EV
Gushikem, Y
Abstract: A film of niobium oxide was immobilized on a SiO2/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 SiO2/C/Nb2O5 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
Subject: Silica niobia composite
Carbon-ceramic electrode
Vitamin C sensor
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.talanta.2010.09.014
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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