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Nanostructured (Sn,Ti, Nb)O2 Solid Solution for Hydrogen Sensing

Published online by Cambridge University Press:  01 February 2011

Maria Cristina Carotta ,
Michele Benetti ,
Vincenzo Guidi ,
Sandro Gherardi ,
Cesare Malagu' ,
Beatrice Vendemiati  and
Giuliano Martinelli
Maria Cristina Carotta
Affiliation:
carotta@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, N/A, 44100, Italy, 00390532974230, 00390532974210
Michele Benetti
Affiliation:
benetti@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, n/a, 44100, Italy
Vincenzo Guidi
Affiliation:
guidi@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, n/a, 44100, Italy
Sandro Gherardi
Affiliation:
gherardi@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, n/a, 44100, Italy
Cesare Malagu'
Affiliation:
malagu@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, n/a, 44100, Italy
Beatrice Vendemiati
Affiliation:
vendemiati@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, n/a, 44100, Italy
Giuliano Martinelli
Affiliation:
martinelli@fe.infn.it, University of Ferrara, Physics Department, Via Saragat 1/C, Ferrara, n/a, 44100, Italy
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Abstract

A novel co-precipitation route for preparing pure nanograined (Ti, Sn, Nb)O2 solid solution has been accomplished. The solid solution containing the three elements has been synthesized with the molar ratios for Sn:Ti:Nb 100:42:5. Electron microscopy and X-ray diffraction have been adopted to observe the morphology, the crystalline structure and the mean grain radius. Calcining at 550, 650, 850 or 1050 °C for 2h, showed rutile-like single-phase.

The prepared powders have been deposited to produce gas sensors in form of thick films through screen-printing technology. SEM micrographs of both powders and films showed regularly-shaped particles with grain dimensions at nanometric level, the nanostructure being maintained up to 1050°C. The sensors have been tested with different reducing gases showing large responses to hydrogen and good selectivity.

Keywords

semiconductingsensornanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 915: Symposium R – Nanostructured Materials and Hybrid Composites for Gas Sensors and Biomedical Applications , 2006 , 0915-R07-10
Copyright
Copyright © Materials Research Society 2006

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References

[1] Radwcka, M., Zakrzewska, K., Rekas, M., Sensors and Actuators B, 47, 194 (1998).Google Scholar
[2] Malagù, C., Guidi, V., Carotta, M.C., Martinelli, G., Appl. Phys. Lett. 84, 4158 (2004).Google Scholar
[3] Chung, W.Y., Lee, D.D., Sohn, B.K, Thin Solid Films 221, 304 (1992).Google Scholar
[4] Williams, D.E., Sensors and Actuators B, 57, 1 (1999)Google Scholar
[5] Carney, C. M., Yoo, S., Akbar, S. A., Sensors and Actuators B, 108, 29 (2005).Google Scholar
[6] Benetti, M., Blo, M., Carotta, M.C., Guidi, V., Keppel, G., Martinelli, G., Sacerdoti, M., Vendemiati, B., Zanni, A., Proc. of Eurosensors XIX, 11-14 September 2005, Barcelona, Spain.Google Scholar
[7] Lantto, V., Romppainen, P. and Leppävuori, S., Sensors and Actuators, 14, 149 (1988).Google Scholar
[8] Lin, J., Yu, J. C., Lo, D. and Lam, S. K., Journal of Catalysis, 183, 368 (1999).Google Scholar