Fabrication of MnO2/graphene oxide composite nanosheets and their application in hydrazine detection

被引：80

作者：

Lei, Junyu ^{[1
]}

Lu, Xiaofeng ^{[1
]}

Wang, Wei ^{[1
]}

Bian, Xiujie ^{[1
]}

Xue, Yanpeng ^{[1
]}

Wang, Ce ^{[1
]}

Li, Lijuan ^{[2
]}

机构：

[1] Jilin Univ, Alan G MacDiarmid Inst, Changchun 130012, Peoples R China

[2] Calif State Univ Long Beach, Dept Chem & Biochem, Long Beach, CA 90840 USA

来源：

RSC ADVANCES | 2012年 / 2卷 / 06期

基金：

中国国家自然科学基金;

关键词：

GRAPHENE OXIDE; ELECTROANALYTICAL DETECTION; MNO2; NANOPARTICLES; MANGANESE-DIOXIDE; GRAPHITE; PLATFORM; STORAGE; FILMS;

D O I：

10.1039/c2ra01065h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

MnO2/graphene oxide (GO) composite nanosheets have been successfully fabricated by a simple wet-chemical synthetic route. The composition and structure of the resulting MnO2/GO composites were characterized by transmission electron microscopy (TEM), energy dispersive X-ray diffraction (EDX), Fourier-transform infrared (FT-IR) spectroscopy and X-ray diffraction (XRD) patterns. The MnO2/GO composite nanosheets exhibited good electrocatalytic behavior in detecting hydrazine at an applied potential of +0.6 V. The sensor showed a good linear dependence on hydrazine concentration in the range of 3 x 10(-6) to 1.12 x 10(-3) with a sensitivity of 1007 mu A mM(-1) cm(-2). The detection limit is 0.16 mu M at the signal-to-noise ratio of 3. Furthermore, the MnO2/GO modified electrode exhibits freedom from interference by other co-existing electroactive species. These results demonstrate that MnO2/GO composites have great potential in the application of hydrazine detection.

引用

页码：2541 / 2544

页数：4

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