Study on NH 3 sensing properties of WO 3 -SiO 2 materials prepared by Sol-gel method

Xusheng Wang, Lianying Zhang, Xi Yao, Kengo Shimanoe, K. Sakai, N. Yamazoe

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1 Citation (Scopus)

Abstract

Gas sensing materials of WO 3 +xwt%SiO 2 (x=0, 5, 10, 20) were prepared by means of a sol-gel method. The microstructure was characterized through XRD, AFM, XPS and surface area analyzer. The materials' NH 3 sensing properties were measured in conventional flow apparatus. It is observed that the nanosized monoclinic phase of WO 3 is formed and the grain size is decreased with the increase of SiO 2 . Being superior to the pure WO 3 element, the WO 3 +5wt%SiO sensing element gave the fairly good response to NH 3 above 350°C.

Original languageEnglish
Pages (from-to)276-280
Number of pages5
JournalGongneng Cailiao/Journal of Functional Materials
Volume29
Issue number3
Publication statusPublished - Dec 1 1998
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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