High toluene sensing properties of NiO-SnO2 composite nanofiber sensors operating at 330 °C

被引：139

作者：

Liu, Li ^{[1
]}

Zhang, Yu ^{[2
]}

Wang, Guoguang ^{[1
]}

Li, Shouchun ^{[1
]}

Wang, Lianyuan ^{[1
]}

Han, Yu ^{[1
]}

Jiang, Xiaoxue ^{[3
]}

Wei, Aiguo ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Superhard Mat, Coll Phys, Changchun 130012, Peoples R China

[2] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

[3] Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130012, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2011年 / 160卷 / 01期

关键词：

Semiconductors; Nanostructures; Nanofibers; Gas sensors; One-dimensional nanostructures; GAS SENSOR; THIN-FILM; CHEMICAL SENSORS; HIGH-SENSITIVITY; CERAMIC SENSORS; ZNO NANORODS; METAL; NANOPARTICLES; NANOBELTS; SURFACE;

D O I：

10.1016/j.snb.2011.08.007

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

NiO-SnO2 composite nanofibers are synthesized by electrospinning of a poly(vinyl pyrroridone) (PVP)/SnCl2 center dot 2H(2)O/NiCl2 solution. Indirect-heated sensors are fabricated by coating the nanofibers on ceramic tubes with signal electrodes. The obtained nanofibers are analyzed by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The sensors are tested at different temperatures to various gases. High toluene sensing properties are observed at 330 degrees C, and the corresponding response value (Ra/Rg), response time, and recovery time are about 11.2s, and 4s to 50 ppm toluene at this condition. Good selectivity and excellent stability are also observed based on the sensors at this temperature. These high sensor performances are explained by the sensing enhancement brought about by NiO addition and the one-dimensional nanostructure of nanofibers. (C) 2011 Elsevier By. All rights reserved.

引用

页码：448 / 454

页数：7

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