Ag-Loaded WO3 Ceramic Nanomaterials: Characterization and Moisture Sensing Studies

作者：Pandey Narendra Kumar^*; Tiwari Karunesh; Roy Akash; Mishra Aradhana; Govindan Anil

来源：International Journal of Applied Ceramic Technology, 2013, 10(1): 150-159.

DOI：10.1111/j.1744-7402.2011.02720.x

Pellet samples of 04% weight Ag-loaded WO3 prepared through soft chemical route were sintered at 700 degrees C and exposed to humidity. Resistance of the pellets decreased with increase in relative humidity. Sensitivity increased with increase in the % loading of Ag. Four percent Ag-loaded WO3 showed maximum sensitivity of 2.38 MO/% RH in 2090% relative humidity range. This sensing element manifests highest crystallinity as well as maximum void concentration. Hysteresis and repeatability for this sensing element after 6 months are within +/- 2%. A polynomial fit of the humidification data revealed a strong correlation between resistance and relative humidity.

• 出版日期2013-2