Simplified preparation of SnO2 inverse opal for Methanol gas sensing performance

被引:40
作者
Wang, Jinquan [1 ,3 ]
Xu, Yanmei [1 ]
Xu, Weichao [1 ]
Zhang, Ming [1 ,2 ]
Chen, Xiaobing [1 ]
机构
[1] Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China
[2] Yangzhou Univ, Test Ctr, Yangzhou 225002, Jiangsu, Peoples R China
[3] Huaiyin Inst Technol, Sch Life Sci & Chem Engn, Huaian 223003, Peoples R China
基金
中国国家自然科学基金;
关键词
Preparation; SnO2; Inverse opal; Methanol gas sensing; OXIDE MATERIALS; THIN-FILMS; SENSORS;
D O I
10.1016/j.micromeso.2015.01.038
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
As a novel structure, inverse opal, with three dimensional periodic macropore and mesopore, huge specific surface area, is promising in highly sensitive gas sensing. In this paper, SnO2 inverse opal was prepared with a simplified polystyrene (PS) opal template cooperating with sal-gel method. The simplified method could spare much work and avoid the operation of the SnO2 inverse opal scraped from microslide. The performance of the SnO2 inverse opal sensor to methanol gas was systemically investigated. The results indicate that the sensing performance of the SnO2 inverse opal sensor to methanol gas is highly improved than traditional sensors. The response of the SnO2 inverse opal sensor is as high as 95 for 500 ppm methanol gas detection. In the range from 1 to 1000 ppm, the SnO2 inverse opal sensor shows fine linear relationship with the growth of the methanol gas concentrations. (C) 2015 Elsevier Inc. All rights reserved.
引用
收藏
页码:93 / 97
页数:5
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