Synthesis,characterization of WO3 nanopowder and its gas sensing properties

Author

Nahire, S.B. ; Patil, R.L. ; Jain, G.H.

Author_Institution

Dept. of Phys., BW Commerce & Sci. Coll., Sinnar, India

fYear

2011

fDate

Nov. 28 2011-Dec. 1 2011

Firstpage

297

Lastpage

302

Abstract

Nanosized WO₃ powders were synthesized from WCl₆ using chemical co-precipitation method. The WO₃ single crystal with mean particle size 68 nm was observed. Thick film resistors were prepared using screen printing technique for building ultra sensitive and selective gas sensors. The response at different temperature ranging from 100°C to 450°C were studied and presented for various gases. High sensitivity has been obtained towards H₂S, revealing the capability of the material to detect concentration as low as 10 ppm, upto the Threshold Limit Value (TLV). The results highlight that the nano-material can be adopted for the development of gas sensors with performances suitable for practical applications.

Keywords

gas sensors; nanoparticles; thick film resistors; tungsten compounds; TLV; WCl₆; WO₃; gas sensing property; nanomaterial; nanopowder; screen printing technique; size 68 nm; temperature 100 degC to 450 degC; thick film resistors; threshold limit value; Films; Gas detectors; Gases; Sensitivity; Temperature sensors; H2S gas sensor; Nanopowder; Thick Film; Tungsten hexachloride; WO3;

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.2011.6136985

Filename

6136985