Gas-Sensitive Properties of Fe2O3 Nanoparticles Prepared by Laser-Induced Vapor-Phase Reaction

Abstract:

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Iron oxide nanoparticles have been synthesized by laser-induced vapor-phase reaction. Mean diameter of the particles varied from approximate 4 nm to 40 nm and the crystalline phase was transited from γ-Fe2O3 to α-Fe2O3 with increasing operation temperature. The nanometer-sized α-Fe2O3 powders were used to fabricate a thick film based gas-sensitive sensor. The effects of the doped noble metals or carbonate and the calcination temperature on sensitivity of the sensor were studied. The results show that the α-Fe2O3 was doped with 3% noble metal or SrCO3 presents the best sensitivity to CO.

Info:

Periodical:

Solid State Phenomena (Volumes 121-123)

Edited by:

Chunli BAI, Sishen XIE, Xing ZHU

Pages:

61-64

DOI:

10.4028/www.scientific.net/SSP.121-123.61

Citation:

G. S. Guo et al., "Gas-Sensitive Properties of Fe2O3 Nanoparticles Prepared by Laser-Induced Vapor-Phase Reaction", Solid State Phenomena, Vols. 121-123, pp. 61-64, 2007

Online since:

March 2007

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$35.00

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