Study of Conduction Mechanism of Bi2O3 Doped Sr2CoO4 Nanocomposite Material and its Gas Sensing Behavior
Keywords:
Sol- Gel Citrate, Gas, SensingAbstract
Nanocrystalline 10 Wt% Bi2O3 doped Sr2CoO4 was prepared by sol-gel citrate method, and calcined at different temperature. The Sr2CoO4 nanoparticles were characterized by Impedance analysis, and Gas sensing. The ac conductivity was studied for the sample 10 Wt% Bi2O3 doped Sr2CoO4 calcined at 650OC, at temperatures 100 to 700OC and over a wide range of frequencies (50 Hz to 200 kHz). Experimental results indicate that the ac conductivity depend on temperature, frequency and concentration of dopent. Nanocrystalline 10 Wt% Bi2O3 doped Sr2CoO4 was found to be good ammonia sensor with high sensitivity and selectivity.
References
- P. Warneck, Chemistry of the Natural Atmosphere, Academic Press Inc., 1998.
- P. Davies, The Fifth Miracle, Simon & Schuster, 1999.
- J.R. Istas, R. de Borger, L. de Temmerman, Guns, K. Meeus Verdinne, A. Ronse, P. Scokart, M. Termonia, Effect of ammonia on the acidi?cation of the environment, European Communities, Report No. EUR 11857 EN, 1988.
- D. Tsiulyanu, S. Marian, V. Miron, H.D. Liess, High sensitive tellurium based NO2 gas sensor, Sens. Actuators B 73 (2001) 35.
- D. Tsiulyanu, S. Marian, H.D. Liess, Sensing properties of tellurium based thin ?lms to propylamine and carbon oxide, Sens. Actuators B 85 (2002) 232.
- D. Kohl, Function and application of gas sensors, topical review, J. Phys. D34 (2001) R125-R149.
- N. Docquier, S. Candel, Combustion control and sensors, a review, Progr. Energy Combust. Sci. 28 (2002) 107-150.
- J. Riegel, H. Neumann, H.M. Wiedenmann, Exhaust gas sensors for automotive emission control, Solid State Ionics 152/153 (2002) 783-800.
- S. Ampuero, J.O. Bosset, The electronic nose applied to dairy products: a review, Sens. Actuators B 94 (2003) 1-12.
- A. Dubbe, Fundamentals of solid state ionic micro gas sensors, Sens. Actuators B 88 (2003) 138-148].
- J.W. Erisman, R. Otjes, A. Hensen, P. Jongejan, P.v.d. Bulk, A. Khlystov, H. M¨ ols, S. Slanina, Instrument development and application in studies and monitoring of ambient ammonia, Atmos. Environ. 35 (2001) 1913-1922.
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