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

Bulletin of materials science

Tripti Shukla¹  Satyendra Singh¹  B C Yadav¹  Anuradha Yadav¹ 

[1] Nanomaterials and Sensors Research Laboratory, Department of Physics, University of Lucknow, Lucknow 226 007, India$$Nanomaterials and Sensors Research Laboratory, Department of Physics, University of Lucknow, Lucknow 226 007, IndiaNanomaterials and Sensors Research Laboratory, Department of Physics, University of Lucknow, Lucknow 226 007, India$$

关键词: LPG sensor;    TiO2;    SEM;    XRD;    sensitivity.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 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 30â€�??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.

【 授权许可】

Unknown