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Room Temperature Ammonia Gas Sensing Using MnO2-Modified ZnO Thick Film Resistors

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DOI: 10.4236/jmp.2011.210150    5,571 Downloads   12,400 Views   Citations

ABSTRACT

Pure ZnO thick film, prepared by screen-printing technique, was almost insensitive to NH3. Pure ZnO thick films were surface modified with MnO2 by dipping them into 0.01 M aqueous solution of manganese chloride (MnCl2) for different intervals of time and fired at 500℃ for 12 h. The grains of MnO2 would disperse around the grains of ZnO base material. The MnO2 modified ZnO films dipped for 30 min were observed to be sensitive and highly selective to NH3 gas at room temperature. An exceptional sensitivity was found to low concentration (50 ppm) of NH3 gas at room temperature and no cross sensitivity was observed even to high concentrations of other hazardous and polluting gases. The effects of surface microstructure and MnO2 concentrations on the sensitivity, selectivity, response and recovery of the sensor in the presence of NH3and other gases were studied and discussed. The better performance could be attributed to an optimum number of surface misfits in terms of MnO2 on the ZnO films.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

L. Patil, L. Sonawane and D. Patil, "Room Temperature Ammonia Gas Sensing Using MnO2-Modified ZnO Thick Film Resistors," Journal of Modern Physics, Vol. 2 No. 10, 2011, pp. 1215-1221. doi: 10.4236/jmp.2011.210150.

References

[1] L. R. Narasimhan, W. Goodman, C. Kumar and N. Patel, “Correlation of Breath Ammonia with Blood Urea Nitrogen and Creatine during Hemodialysis,” Proceedings of the National Academy of Sciences, Vol. 98, No. 8, 2001, pp. 4617-4621. doi:10.1073/pnas.071057598
[2] R. E. de la Hoz, D. P. Schueter and W. N. Rom, “Chronic Lung Disease Secondary to Ammonia Inhalation Injury: A Report on Three Cases,” American Journal of Industrial Medicine, Vol. 29, 1996, pp. 209-214. doi:10.1002/(SICI)1097-0274(199602)29:2<209::AID-AJIM12>3.0.CO;2-7
[3] C. M. Leung and C. L. Foo, “Mass Ammo-nia Inhalation Burns-Experience in the Management of 12 Pa-tients,” Annals Academy of Medicine Singapore, Vol. 21, 1992, pp. 624-629. doi:10.1289/ehp.99107617
[4] R. A. Michaels, “Emergency Planning and Acute Toxic Potency of Inhaled Ammonia,” Environmental Health Perspectives, Vol. 107, No. 8, 1999, pp. 617-627.
[5] L. G. Close, F. I. Catlin and A. M. Cohn, “Acute and Chronic Effects of Ammonia Burns on the Respiratory Track,” Archives of Otolaryngology, Vol. 106, No. 3, 1980, pp. 151-158.
[6] P. T. Moseley, “Materials Selection for Semiconductor Gas Sensors,” Sensors and Actuators B, Vol. 6, 1992, pp. 149-156. doi:10.1016/0925-4005(92)80047-2
[7] T. Seiyama and F. Era, “Gas Detecting Materials,” Zairyo- Kagaku Japanese, Vol. 8, 1971, pp. 232-239.
[8] S. Pizzini, N. Butta, D. Narducci and M. Palladino, “Thick film ZnO Resistive Gas Sensors,” Journal of the Electrochemical Society, Vol. 136, 1989, pp. 1945-1948. doi:10.1149/1.2097092
[9] D. R. Patil and L. A. Patil, “Prep-aration and Study of NH3 Gas Sensing Behavior of Fe2O3 Doped ZnO Thick Film Resistors,” Sensors and Transducers, Vol. 70, No. 8, 2006, pp. 661-670.
[10] D. R. Patil and L. A. Patil, “Ammonia Sensing Resistors Based on Fe2O3-Modified ZnO Thick Films,” Sensors IEEE, Vol. 7, 2007, pp. 434-439. doi:10.1109/JSEN.2006.886977
[11] M. S. Wagh, G. H. Jain, D. R. Patil, S. A. Patil and L. A. Patil, “Modified Zinc Oxide Thick Film Resistors as NH3 Gas Sensor,” Sensors and Actua-tors B, Vol. 115, 2006, pp. 128-133. doi:10.1016/j.snb.2005.08.030
[12] D. R. Patil, L. A. Patil and P. P. Patil, “Cr2O3-Activated ZnO Thick Film Resistors for Ammonia Gas Sensing Operable at Room Temperature,” Sen-sors and Actuators B, Vol. 126, 2007, pp. 368-374. doi:10.1016/j.snb.2007.03.028
[13] G. S. Trivikrama Rao and D. Tarakarama Rao, “Gas Sensitivity of ZnO Based Thick Film Sensor to NH3 at Room Temperature,” Sensors and Actuators B, Vol. 55, 1999, pp. 166-169. doi:10.1016/S0925-4005(99)00049-0
[14] H. Nanto, T. Mi-nami and S. Takata, “Zinc Oxide Thin Film Ammonia Gas Sensors with High Sensitivity and Excellent Selectivity,” Journal of Applied Physics, Vol. 60, No. 2, 1986, pp. 482-484. doi:10.1063/1.337435
[15] P. T. Moseley and D. E. Williams, “A Selective Ammonia Sensor,” Sensors and Actuators B, Vol. 1, No. 1-6, 1990, pp. 113-115. doi:10.1016/0925-4005(90)80183-Z
[16] L. A. Patil and D. R. Patil, “Heterocontact Type CuO- Activated SnO2 Sensor for the Detection of a ppm Level H2S Gas at Room Temperature,” Sensors and Actuators B, Vol. 120, 2006, pp. 316-323. doi:10.1016/j.snb.2006.02.022
[17] D. R. Patil and L. A. Patil, “Room Temperature Chlorine Gas Sensing Using Surface Modified ZnO Thick Film Resistors,” Sensors and Actuators B, Vol. 123, 2007, pp. 546-553. doi:10.1016/j.snb.2006.09.060

  
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