Gas sensing properties of nanocrystalline metal oxide powders prepared by sol-gel method

M. Nasseri; M. H. Majles Ara; M. Souri

doi:10.1117/12.779373

1 November 2007 Gas sensing properties of nanocrystalline metal oxide powders prepared by sol-gel method

M. Nasseri, M. H. Majles Ara, M. Souri

Proceedings Volume 6423, International Conference on Smart Materials and Nanotechnology in Engineering; 64231A (2007) https://doi.org/10.1117/12.779373
Event: International Conference on Smart Materials and Nanotechnology in Engineering, 2007, Harbin, China

Abstract

SnO₂ nonopowders were prepared by sol-gel method and exposed to different thermal decomposition. The XRD and TEM analysis have been carried out. At higher temperature X-ray diffraction peaks are sharper with more intensified peaks. AlsoTEM micrograph reveals that the grain size of nanopowders changed from 10 nm to 80 nm regarding to different thermal treatment. The gas response shows characteristic dependence on dm (grain size). Responses to H2 and LPG gas as a function of operation temperature in dry air for the analyzed sensors with different nano powders show that smaller grain size are more sensitive to H2 and LPG gas.

Citation Download Citation

M. Nasseri, M. H. Majles Ara, and M. Souri "Gas sensing properties of nanocrystalline metal oxide powders prepared by sol-gel method", Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64231A (1 November 2007); https://doi.org/10.1117/12.779373

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