A Novel Chloropyrifos Electrochemical Sensor Based on Polyaniline/Carbon Nanotubes Composite

被引：1

作者：

Ebrahim, Sh. ^{[1
]}

El-Raey, R. ^{[2
]}

Hefnawy, A. ^{[1
]}

Ibrahim, H. ^{[2
]}

Soliman, M. ^{[1
]}

机构：

[1] Univ Alexandria, Dept Mat Sci, Inst Grad Studies & Res, Alexandria, Egypt

[2] Univ Alexandria, Dept Environm Studies, Inst Grad Studies & Res, Alexandria, Egypt

来源：

MATERIALS AND APPLICATIONS FOR SENSORS AND TRANSDUCERS III | 2014年 / 605卷

关键词：

Polyaniline; Conducting polymers; Biosensors; Chloropyrifos;

D O I：

10.4028/www.scientific.net/KEM.605.99

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Polyaniline nanofibers were prepared chemically in both emiraldine base (EB) and emiraldine salt (ES) forms. The composite of polyaniline emiraldine salt with single walled carbon nanotubes (SWCNTs) was developed. Electrochemical sensors based on polyaniline nanofibers and its composite have been developed for the detection of chloropyrifos. Chloropyrifos exhibits one well defined reduction peak. The maximum peak current was linearly related to chloropyrifos concentration in the range from 0.2 mu M to 1.4 mu M. It was found that the SWCNTs improved the sensitivity of the polyaniline base graphite electrode from 3.0 mA/mu M for polyaniline base to 9.69 mA/mu M for ES-SWCNTs composite electrode.

引用

页码：99 / 102

页数：4

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