Fast response chlorine gas sensor based on mesoporous SnO2

被引：85

作者：

Wang Ding ^{[1
]}

Hu Ping ^{[2
]}

Xu Jiaqiang ^{[1
,3
]}

Dong Xiaowen ^{[1
]}

Pan Qingyi ^{[1
]}

机构：

[1] Shanghai Univ, Coll Sci, Dept Chem, Shanghai 200444, Peoples R China

[2] Zhengzhou Coll Anim Husb Engn, Zhengzhou 450002, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2009年 / 140卷 / 02期

关键词：

Chlorine gas sensor; Mesoporous tin oxide; Hydrothermal; Fast response; PHTHALOCYANINE THIN-FILMS; SENSING PROPERTIES; TIN OXIDE; COPRECIPITATION METHOD; FACILE SYNTHESIS; TEMPLATE; H-2;

D O I：

10.1016/j.snb.2009.05.027

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Mesoporous SnO2 is obtained through a simple hydrothermal process by using tin chloride as a raw material, urea as a pore-forming agent and pH regulator. X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and Brunauer-Emmett-Teller (BET) nitrogen adsorption-desorption measurements are employed to characterize the obtained mesoporous structures. The results show that the as synthesized material after calcination can be well indexed to tetragonal phase SnO2 with a mesoporous structure. The sensing properties of the sensor based on mesoporous SnO2 are investigated. The results reveal that the response to dilute Cl-2 gas of the materials is very high and fast. The short recovery time mainly attributes to the bigger pore size of mesoporous SnO2. Finally, the reaction mechanism is proposed. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：383 / 389

页数：7

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