NANOSTRUCTURED TIN OXIDE FOR GAS SENSOR APPLICATION
Sergiy M. Malovanyy, Olga I. Milovanova, Edward V. Panov
Pages: 373-381
Publié: 1 Jan 2013
Vues: 938
Téléchargements: 62
Résumé: Tin dioxide (SnO2) is the most important material for use in gas sensing. The performance of SnO2 sensor is directly related to the tin oxide particle size and compositional characteristics. In the present study, a method for the preparation of pure or chemically modified SnO2 nano-powders by chemical interaction in molten salts is presented. The molten alkali metal nitrates NaNO3 and KNO3 were used as liquid reaction medium. The oxides prepared in molten salts consist of small particles (~ 6-10 nm) with narrow size distribution. The particles are united into soft associates with an average size of 200 – 300nm. It was found that SnO2 nano-powders have good stability against recrystallization process at 0 elevated temperatures up to 650 C. The sensors were fabricated using thick film technology and tested for ethanol and acetone vapor detection. SnO2 film exhibits high sensitivity to vapors at a low o operating temperature of 200 C. Preliminary results indicate potential application of the material for gas sensors.
Mots-clés : gas sensors, tin dioxide nanopowder, molten salt synthesis, ethanol and dimethylketone
Citer cet article : Sergiy M. Malovanyy, Olga I. Milovanova, Edward V. Panov. NANOSTRUCTURED TIN OXIDE FOR GAS SENSOR APPLICATION. Journal of International Scientific Publications: Materials, Methods & Technologies 7, 373-381 (2013). https://www.scientific-publications.net/en/article/1003118/
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