Abstract
Using titanium isopropoxide the nano size TiO2 was prepared by new sol-gel method. The nano size structure of TiO2 was confirmed by ultra-violet diffuse reflectance spectroscopy (UV-DRS), X-Ray Diffraction (XRD) Spectroscopy, Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). The gas sensitivity of material was tested by preparing thick film by screen printing technique. For this the thixotropic paste of material was prepared by using ethyl cellulose and butyl cellulose. The gas sensing performance of this thick film was tested for gases like ethanol, CO2, H2S, NH3, CO, Cl2 and maximum sensitivity was observed for H2S gas. The H2S gas sensing ability was also improved by doping of cobalt into TiO2 by hydrothermal method. The cobalt doped TiO2 showed sensitivity for minimum 100 ppm of H2S at 300°C.
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Acknowledgements
The authors thank Dr. V N Pawar and the managing committee of M.V.P. Samaj, Nashik for providing the necessary infrastructure and UGC, New Delhi for providing the funds. Thanks are also due to C-MET Pune and IIT Mumbai for extending the analysis facilities.
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Nikam, R.D., Gaikwad, S.S., Patil, G.E., Jain, G.H., Gaikwad, V.B. (2012). Synthesis and Applications of Nano Size Titanium Oxide and Cobalt Doped Titanium Oxide. In: Gupta Bhowon, M., Jhaumeer-Laulloo, S., Li Kam Wah, H., Ramasami, P. (eds) Chemistry for Sustainable Development. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-8650-1_4
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