Exploring Multiwalled Carbon Nanotubes for Naproxen Detection

被引：43

作者：

Montes, Rodrigo H. O. ^{[1
]}

Stefano, Jessica S. ^{[1
]}

Richter, Eduardo M. ^{[1
]}

Munoz, Rodrigo A. A. ^{[1
]}

机构：

[1] Univ Fed Uberlandia, Inst Quim, Uberlandia, MG, Brazil

来源：

ELECTROANALYSIS | 2014年 / 26卷 / 07期

关键词：

Naproxen; Carbon nanotubes; Anti-inflammatories; Electrocatalysis; Batch-injection analysis; BATCH INJECTION-ANALYSIS; THIN-LAYER DIFFUSION; PASTE ELECTRODE; LIQUID; VOLTAMMETRY; FILMS;

D O I：

10.1002/elan.201400113

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The electrochemical oxidation of naproxen was investigated at a multiwalled carbon nanotube (MWCNT)-modified electrode. A decrease (200 mV) in the overpotential of the naproxen oxidation reaction and considerable (4-fold) current increase (compared to the bare glassy-carbon electrode) was observed. Two one-electron transfers were verified at both bare and MWCNT-modified electrodes and thus a new mechanism for the electrochemical oxidation of naproxen is pro-posed. Indicative of a mass transport regime that includes a thin-layer diffusional process (entrapment of naproxen species within the MWCNT film) is presented as a possible explanation for the lowered oxidation potential and substantial current increase. The anti-fouling properties of MWCNTs on the amperometric detection of naproxen using a batch-injection analysis (BIA) system is demonstrated.

引用

页码：1449 / 1453

页数：5

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