Solid-state titania-based gas sensor for liquefied petroleum gas detection at room temperature

被引：27
|
作者：
Yadav, B. C. [1 ]
Yadav, Anuradha [1 ]
Shukla, Tripti [1 ]
Singh, Satyendra [1 ]
机构：
[1] Univ Lucknow, Dept Phys, Nanomat & Sensors Res Lab, Lucknow 226007, Uttar Pradesh, India
来源：
BULLETIN OF MATERIALS SCIENCE | 2011年 / 34卷 / 07期
关键词：
LPG sensor; TiO2; SEM; XRD; sensitivity; NANOSTRUCTURED ZINC-OXIDE; HYDROTHERMAL SYNTHESIS; TIO2; NANOCRYSTALS; OXYGEN SENSORS; THIN-FILMS; LPG; ADDITIVES; OXIDATION; ETHANOL; ROUTE;
D O I：
10.1007/s12034-011-0370-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper reports the liquefied petroleum gas (LPG) sensing of titanium dioxide (Qualigens, India). Scanning electron micrographs and X-ray diffraction studies of samples were done. SEM shows that the material is porous and has grapes-like morphology before exposure to the LPG. XRD patterns reveal the crystalline nature of the material. The crystallites sizes of the TiO2 were found in the range of 30-75 nm. Variations in resistance with exposure of LPG to the sensing element were observed. The average sensitivity for different volume percentages of gas was estimated. The maximum value of average sensitivity was 1.7 for higher vol.% of LPG. Percentage sensor response (%SR) as a function of time was calculated and its maximum value was 45%. Response time of the sensor was 70 s. The sensor was quite sensitive to LPG and results were found reproducible.
引用
收藏
页码：1639 / 1644
页数：6
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