Gold sensitized sprayed SnO2 nanostructured film for enhanced LPG sensing

Thumbnail Image
jaap2-17sno2-cod.pdf(956.72 KB)
Accepted version
Nakate, Umesh T.
Patil, Pramila
Ghule, Balaji G.
Ekar, Satish U.
Al-Osta, Ahmed
Jadhav, Vijaykumar V.
Mane, Rajaram S.
Kale, S. N.
Naushad, Mu
O'Dwyer, Colm
Journal Title
Journal ISSN
Volume Title
Research Projects
Organizational Units
Journal Issue
We report LPG sensing of gold (Au)-sensitized SnO2 nanostructured film fabricated by an easy spray pyrolysis deposition method whose surface morphology is confirmed by field-emission scanning electron microscopy and atomic force microscopy images and structure by X-ray diffraction pattern. Energy dispersive X-ray spectrometer analysis has carried out for finding elemental composition. The SnO2 film is uniform and consists of spherical particles of ∼10nm. The highest gas response observed at 780ppm LPG concentration for pristine SnO2 is 28%, at operating temperature 623K, which is greatly improved on Au sensitization up to 57% with 60s rapid response time at 598K operating temperature. The high gas response is due to electronic effect and catalytic spill-over effect of Au sensitization. The improved sensing mechanism has throughly been explored.
Gold sensitization , SnO , Nanostructure , LPG Spray pyrolysis
Nakate, U. T., Patil, P., Ghule, B. G., Ekar, S., Al-Osta, A., Jadhav, V. V., Mane, R. S., Kale, S. N., Naushad, M. and O'Dwyer, C. (2017) 'Gold sensitized sprayed SnO2 nanostructured film for enhanced LPG sensing', Journal of Analytical and Applied Pyrolysis, 124, pp. 362-368. doi: 10.1016/j.jaap.2016.12.029