Preparation and characterization of nanostructured Zirconia for gas sensing application

Author

Patil, Pratap G. ; Jain, G.H.

Author_Institution

Dept. of Phys., Ramnarain Ruia Coll., Mumbai, India

fYear

2011

fDate

Nov. 28 2011-Dec. 1 2011

Firstpage

120

Lastpage

123

Abstract

Nanocrystalline ZrO₂ (Zirconia) has been synthesized by a conventional precipitation method. The structural, morphological, microstructural, optical and gas-sensing properties of ZrO₂ were investigated by using X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis spectroscopy and static gas sensing unit, respectively. X-ray diffraction pattern and TEM of the synthesized product reveal their nano-crystalline nature with grain size 18 nm and 20 nm, respectively. Gas sensing properties of their thick films, which were fabricated by screen-printing to various gases (O₂, NO₂, C₂H₅OH, CO, CO₂, NH₃, LPG, H₂S and H₂) were tested in ambient air. The ZrO₂ thick films showed a high response and selectivity to H₂S gas. The effect of operating temperature, gas concentration on the sensing characteristics of these films towards H₂S was discussed.

Keywords

X-ray diffraction; gas sensors; hydrogen compounds; scanning electron microscopy; transmission electron microscopy; ultraviolet spectroscopy; zirconium compounds; H₂S; SEM; TEM; UV-vis spectroscopy; X-ray diffraction analysis; XRD; ZrO₂; conventional precipitation method; gas sensing application; microstructural properties; morphological properties; nanostructured Zirconia; optical properties; scanning electron microscopy; size 18 nm to 20 nm; structural properties; transmission electron microscopy; Actuators; Gases; Powders; Temperature sensors; Thick films; H2S sensor; characterization; conventional precipitation method; zirconia nanopowder;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensing Technology (ICST), 2011 Fifth International Conference on

Conference_Location

Palmerston North

ISSN

2156-8065

Print_ISBN

978-1-4577-0168-9

Type

conf

DOI

10.1109/ICSensT.2011.6136945

Filename

6136945