Sno2-Wo3 Mixed Oxide as A Semiconductor Gas Sensor for Co2
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 6
Abstract
SnO2 and WO3 oxide powders is mixed different composition thoroughly in an acetone medium by using a mortar and pestle and then heated at 9000C in a muffle furnace. The above mixed oxide powder is used to form a thick film by screen printing method. The sensors based on the mixed oxide were used to detect the CO2 gas at room temperature (303K).The experimental results show that the 45 mol.% SnO2-55 mol% WO3 mixed oxide based sensor exhibits the highest response( sensitivity = 12.45) on 802ppm CO2 gas at room temperature. The response and recovery time for all the sensors was studied. The average crystalline size was calculated from XRD spectra is ranging from 21.22mm to 23.10mm for mixed oxide powder whereas pure WO3 is 28.23mm.
Authors and Affiliations
S. M. Yenorkar
Keywords
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