AMMONIA GAS(NH3) SENSING OF SnO2-CuO MIXED OXIDE THICK FILM AT OPERATING TEMPERATURE
Objective To develop ammonia gas sensor by SnO2-CuO Mixed oxide thick film which is highly sensitive at particular optimum temperature.
Materials and Methods:The SnO2 and CuO powder mixed with different ratio and heated at 8000C and then this powder is used to prepared thick
films by a screen – printing technique on glass substrate.
Results:The NH3 gas sensing properties, preferably the rate of response of CuO-SnO2 sensors are influenced by the CuO doping and operating
temperature. XRD analysis showed that crystallite size is small (97.3nm) for 50SnO2-50CuO composition. Thermal analysis (TG/DTA) is the calculate
of change in weight and energy in the form of heat as the material is being cooled or heated at a constant rate. The resistance change per ppm is found
to be 82 MΩ for SA5 sample.
Conclusion : 50SnO2-50CuO composition sample is optimize for better sensing material as regards to other.
2. Kumar, R.; Kushwaha, N.; Mittal, J. Superior, rapid and reversible sensing activity of graphene-SnO hybrid film for low concentration of ammonia at room temperature. Sens. Actuators B Chem. 2017, 244, 243–251.
3. Sharma, S.; Kumar, A.; Singh, N.; Kaur, D. Excellent room temperature ammonia gas sensing properties of n-MoS2/p-CuO heterojunction nanoworms. Sens. Actuators B Chem. 2018, 275, 499–507.
4. Harpar C.A., Handbook of Thick Film Hybrid Microelectronics, McGraw-Hill, New York, 1974.
5. Joshi S.K., Rao C.N. R.,in:T, Tsuruto,S.Nagakura(Eds), New Materials, Narosa Publishing House,New Delhi,1992.
6. Tamaki, J., Shimanoe, K., Yamada, Y., Yamamoto, Y., Miura, N., & Yamazoe, N. (1998). Dilute hydrogen sulfide sensing properties of CuO-SnO2 thin film prepared by low-pressure evaporation method. Sensors and Actuators, B: Chemical, 49(1-2), 121-125.
7. M.H. Madhusudhana Reddy, S.R. Jawalekar, A.N. Chandorkar,The effect of heat treatment on the structural properties of electron-beam-evaporated SnO2 films,Thin Solid Films,Volume 169, Issue 1,1989,Pages 117-126,ISSN 0040-6090.
8. C.H. Liu, L. Zhang, Y.J. He, Properties and mechanism of study of Ag doped SnO2 thin films as H2S sensors, Thin Solid Films 304 (1997) 13–15.
9. M. S. Tong, G. R. Dai, D. S. Gao, Gas-sensing properties of PdO-modified SnO2–Fe2O3 double-layer thin-film sensor prepared by PECVD technique, Vacuum, 59, 2000, pp. 877–884
10. R.Pirone,P. Ciambell, G. Moretti and G.Russo, Nitric-Oxide decomposition Over Cu-Exchanged ZSM-5 with high SI AL ratio, Applied catalysis. B, Environmental, 8(2), 1996, pp. 197-207
11. T. Nguyen, S. Park, J. B. Kim, T. K. Kim, G. H. Seong, J. Choo,Y. S. Kim, J. Beom, T. Kyu, G. Hun, Y. Shin, Polycrystalline tungsten oxide nanofibers for gas- sensing applications Sens. Actuators B, 2011; 160:549-554.
12. C.S.Rout, M.Hegde, A.Govindaraj, C.N.R.Rao, Ammonia sensors based on metal oxide nanostructures,Nanotechnology 18 (2007) 205504.
13. G. K. Mani, J. B. B. Rayappan, A highly selective room temperature ammonia sensor using spray deposited zinc oxide thin film, Sens. Actuat. B 183 (2013) 459-466.
This work is licensed under a Creative Commons Attribution 4.0 International License.