Abstract
Gas sensing materials of WO3+xwt%SiO2 (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' NH3 sensing properties were measured in conventional flow apparatus. It is observed that the nanosized monoclinic phase of WO3 is formed and the grain size is decreased with the increase of SiO2. Being superior to the pure WO3 element, the WO3+5wt%SiO sensing element gave the fairly good response to NH3 above 350°C.
Original language | English |
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Pages (from-to) | 276-280 |
Number of pages | 5 |
Journal | Gongneng Cailiao/Journal of Functional Materials |
Volume | 29 |
Issue number | 3 |
Publication status | Published - 1998 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
- Materials Chemistry