1Department of physics, M. J. College, Jalgaon (MS) India
2Bulk and Nanomaterials Research Lab, Dept. of Physics, R. L. College, Parola (MS), India
Online published on 8 May, 2017.
The nano scaled material powder of MnO2 was synthesized by Disc type ultrasonicated microwave assisted centrifuge technique. The characterizations and LPG gas sensing performance of pure and SnO2 doped MnO2 thick films have been investigated. Thick films of pure manganese oxide were prepared by screen printing technique. Pure manganese oxide was almost insensitive to LPG. However, SnO2 doped MnO2 (5 wt. %.) thick films were observed to be most sensitive to LPG (200 ppm) at 350°C. The efforts are made to develop the LPG gas sensor based on doping of pure MnO2 thick films. The quick response and fast recovery are the main features of this sensor. The effects of microstructure and additive concentration on the gas response, selectivity, response time and recovery time of the sensor in the presence of LPG gas were studied and discussed.
SnO2 doped MnO2, LPG gas sensor, Thick film, Low cost sensor
