Preparation of porous SnO2 thin film with high gasoline sensing performance

被引：10

作者：

Liu, G. ^{[2
]}

Zhao, Z. ^{[1
]}

Jiao, X. ^{[1
]}

Chen, D. ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Jinan 250100, Peoples R China

[2] Binzhou Polytech, Binzhou 256603, Peoples R China

来源：

MATERIALS TECHNOLOGY | 2014年 / 29卷 / 03期

关键词：

SnO2; Porous materials; Thin films; Sensors; Sol-gel preparation; GAS SENSORS; VAPOR-DEPOSITION; LOW-TEMPERATURE; TIN DIOXIDE; OXYGEN; SENSITIVITY; ADSORPTION; MONOLITHS; DIFFUSION; EPOXIDES;

D O I：

10.1179/1753555713Y.0000000116

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Porous SnO2 film was prepared through a sol- gel process followed by CO2 supercritical extraction. The film was composed of nanoparticles with size < 5 nm, and the surface area was as high as 388 m(2) g(-1). After being aged at 250 degrees C, the crystallinity of SnO2 significantly increased, and the size of the composed particles changed to 3-5 nm. In addition, the gas sensing property of the aged porous film was investigated. The film exhibited excellent gas sensing performance for gasoline at the optimum working temperature of 200- 250 degrees C, with a detection limit as low as 2 ppm.

引用

页码：167 / 171

页数：5

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