Grain Size Control and Ethanol Sensing Properties of Calcined SnO2 Nanoparticles

Abstract:

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SnO2 nanoparticles were prepared via a sol-gel method by heating the mixture of hydrous SnO2 nanoparticles and SiO2 nanospheres at 600 °C. The average particle size of the obtained SnO2 nanoparticles is 3.3 nm, smaller than that of the SnO2 nanoparticles (~ 6.4 nm) prepared by calcining the pure hydrous SnO2 at 600 °C. The SiO2 nanospheres play an important role in restricting SnO2 nanocrystal growth. The ~3.3 nm-sized SnO2 nanoparticles exhibited high sensitivity for ethanol as well as quick response and recovery time. The concentration detection limit can be as low as 5 ppm at room temperature.

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Periodical:

Edited by:

Deliang Chen

Pages:

76-79

DOI:

10.4028/www.scientific.net/AMR.266.76

Citation:

Y. Wang et al., "Grain Size Control and Ethanol Sensing Properties of Calcined SnO2 Nanoparticles", Advanced Materials Research, Vol. 266, pp. 76-79, 2011

Online since:

June 2011

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$35.00

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