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Tin Dioxide Nano-Powders for Gas Sensor Applications

  • R. Vacassy (a1), R. Houriet (a1), C. J. G. Plummer (a2), J. Dutta (a3) and H. Hofmann (a1)...


SnO2 nanoparticles are of interest for gas sensor applications because the surface area is much larger compared to conventional powders. Thus, interactions between the material and the gases, which occur on the surface sites of the particles, are increased considerably. The preparation of SnO2 powders has been investigated following two forced precipitation systems: the hydrolysis reaction of SnC14 in an emulsion media and the hydrolysis reaction of Sn2+ in the presence of a complexing ligand (CH3COO). Spherical nanoparticles in the 10 to 100 nm range and with a narrow size distribution were synthesized by both precipitating routes. In both cases, it has been demonstrated that the most important parameter which controlled the particle size was the nature of the associated anion. When this associated anion or ligand is able to form a strong complex with the colloidal subunits, a barrier against Van der Waals attraction is created which results in little growth. This greatly influences the agglomeration/growth kinetics during the precipitation. The effect of acetate chelating ligands which resulted in the SnO2 nano-powders formed of 5–10 nm crystallites will be presented and discussed. Preliminary results on the gas (N2, NO) adsorption studies on pellets formed from these powders are also presented.



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1. Chopra, K.L., Major, S. and Pandya, D.K., Thin Solid Films 102, 1 (1983).
2. Diéguez, A., Romano-Rodriguez, A., Morante, J.R., Weimar, U., Schweizer-Berberich, M. and Göpel, W., Sensors and Actuators B 31, 1 (1996).
3. Lim, C. and Oh, S., Sensors and Actuators B 30, 223 (1996).
4. Matijevic, E., Ann. Rev. Mater. Sci. 15, 483 (1985).
5. Ocana, M., Serna, C.J. and Matijevic, E., Mater. Letters 12, 37 (1991).
6. Kanamori, M., Suzuki, K., Yamada, T., Ohya, Y. and Takahashi, Y., J. Ceram. Soc. Jpn., Int. Ed. 103, 1244 (1995) [J. Ceram. Soc. Jpn. 103, 1258 (1995)].
7. Dutta, J., Houriet, R., and Hofmann, H. in Proceedings of 6th European Conference on Application of Surface and Interface Analysis, edited by Mathieu, H.J., Reihl, B. and Briggs, D. (ECASIA 95, Montreux, Switzerland, 1996) pp. 875878.
8. Towata, S., Soek-keen, L., Shinozaki, K. and Mizutani, N. in Advanced Materials 93, I/A: Ceramics, Powders, Corrosion and Advanced Processing, edited by Mizutani, N. et Al. (Trans. Mat. Res. Soc. Jpn. 14A, 1994) pp. 4144.
9. Vacassy, R., Scholz, S.M., Dutta, J., Plummer, C.J.G., Houriet, R. and Hofmann, H., submitted to J. Am. Ceram. Soc..

Tin Dioxide Nano-Powders for Gas Sensor Applications

  • R. Vacassy (a1), R. Houriet (a1), C. J. G. Plummer (a2), J. Dutta (a3) and H. Hofmann (a1)...


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