Gas Sensing Behavior of Mesoporous SiOC Glasses

Year: 2013

Authors: Karakuscu A., Ponzoni A., Aravind P. R., Sberveglieri G., Soraru G. D.

Autors Affiliation: Sensor Lab, University of Brescia and CNR-IDASC, Brescia I-25133, Italy;
Dipartimento di Ingegneria dei Materiali, University of Trento, Via Mesiano 77, Trento 38123, Italy

Abstract: In this study, for the first time, we report the gas sensing behavior of aerogel-derived silicon oxycarbide (SiOC) glasses. The SiOC glass pyrolyzed at 1400 degrees C has specific surface area of 150m(2)/g with pore size in the 2-20nm range. SiOC sensor shows good response to 5ppm NO2 at 300 degrees C. NO2 response completely disappears at 400 degrees C, and from this temperature SiOC sensor starts respond to H-2. The optimum sensitivity for H-2 is obtained at 500 degrees C. SiOC sensor is very selective; it is not sensitive to other gases such as acetone vapor or CO, even at high concentrations.


Volume: 96 (8)      Pages from: 2366  to: 2369

More Information: G. D. Soraru and Aravind P. R. acknowledge the financial contribution from Provincia Autonoma di Trento under the project NAOMI and the European Community, through a Marie Curie Initial Training Network \”FUNEA\”, MCITN-264873. Authors would like to thank Dr. John Axel Down for editing.
DOI: 10.1111/jace.12491

Citations: 53
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