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

被引：33

作者：

Arenas, Leliz T. ^{[1
]}

Villis, Paulo C. M. ^{[1
]}

Arguello, Jacqueline ^{[2
]}

Landers, Richard ^{[3
]}

Benvenutti, Edilson V. ^{[2
]}

Gushikem, Yoshitaka ^{[1
]}

机构：

[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

来源：

TALANTA | 2010年 / 83卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

Silica niobia composite; Carbon-ceramic electrode; Vitamin C sensor; Sol-gel; SILICA-GEL SURFACE; SOL-GEL; ELECTROCATALYTIC OXIDATION; VOLTAMMETRIC DETERMINATION; CATALYTIC-PROPERTIES; PASTE ELECTRODE; GRAPHITE OXIDES; URIC-ACID; COMPOSITE; FILM;

D O I：

10.1016/j.talanta.2010.09.014

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学];

摘要：

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

引用

页码：241 / 248

页数：8

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