New electrode architectures based on poly(methylene green) and functionalized carbon nanotubes: Characterization and application to detection of acetaminophen and pyridoxine

被引：56
作者：
Barsan, Madalina M. [1 ]
Toledo, Camilla T. [1 ,2 ]
Brett, Christopher M. A. [1 ]
机构：
[1] Univ Coimbra, Fac Ciencias & Tecnol, Dept Quim, P-3004535 Coimbra, Portugal
[2] Univ Fed Vales Jequitinhonha & Mucuri, Inst Ciencia & Tecnol, Diamantina, MG, Brazil
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2015年 / 736卷
关键词：
Poly(methylene green); Composite electrodes; Carbon nanotubes; Acetaminophen; Pyridoxine; PASTE ELECTRODE; VOLTAMMETRIC DETERMINATION; BIOFUEL CELLS; ELECTROCHEMICAL SENSORS; ASCORBIC-ACID; VITAMIN-B-6; BIOSENSORS; OXIDATION; FILMS; PARACETAMOL;
D O I：
10.1016/j.jelechem.2014.10.026
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
New electrode platforms have been constructed containing the redox polymer poly(methylene green) (PMG) and functionalized carbon nanotubes (fCNT) in two configurations, the first containing MG electropolymerised on a graphite composite electrode (CE) and covered with fCNT (fCNT/PMG/CE), the second having the MG electropolymerised on top of fCNT modified CE (PMG/fCNT/CE). Modified electrodes with both configurations were characterized by cyclic voltammetry and electrochemical impedance spectroscopy, and compared with PMG/CE and fCNT/CE and CE, in order to evaluate the role of each component in the modified electrode architecture. The modified electrodes were applied to the detection of acetaminophen and pyridoxine, by fixed potential amperometry and differential pulse voltammetry, the latter allowing the simultaneous detection of both analytes. The analytical properties of fCNT/PMG/CE and PMG/fCNT/CE sensors were obtained and the best analytical performance compared with recently reported acetaminophen and pyridoxine sensors. Determination of both analytes in pharmaceutical samples was successfully performed. (C) 2014 Elsevier B.V. All rights reserved.
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页码：8 / 15
页数：8
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