Fabrication and ethanol-sensing properties of micro gas sensor based on electrospun SnO2 nanofibers

被引：246

作者：

Zhang, Yang ^{[1
]}

He, Xiuli ^{[1
]}

Li, Jianping ^{[1
]}

Miao, Zhenjiang ^{[2
]}

Huang, Feng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Elect, State Key Lab Transducer Technol, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Inst Chem, BNLMS, Beijing 100080, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2008年 / 132卷 / 01期

关键词：

electrospinning; tin dioxide nanofibers; micro gas sensor; ethanol-sensing properties;

D O I：

10.1016/j.snb.2008.01.006

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

SnO2 nanofibers were obtained by electrospinning of a poly(vinyl alcohol) (PVA)/SnCl4 center dot 5H(2)O solution. A novel micro gas sensor based on the SnO2 nanofibers was successfully fabricated. The morphology and crystal structure of the fibers were analyzed by scanning electron microscope (SEM), transmission electron microscope (TEM) and X-ray diffraction (XRD), and the ethanol-sensing properties of the sensor were tested. The results showed that the SnO2 nanofibers with an average diameter of similar to 100 nm could be directly deposited on a microhotplate by "near-field" electrospinning. The micro gas sensor exhibited large response, low detection limit, fast response/recovery and good reproducibility. The detection limit was <10 ppb and the response/recovery time towards 10 ppm ethanol was <14 s. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：67 / 73

页数：7

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