Gas Sensing Behavior of Mesoporous SiOC Glasses

Journal of the American Ceramic Society - Tập 96 Số 8 - Trang 2366-2369 - 2013
Aylin Karakuscu1, Andrea Ponzoni1, Aravind Parakkulam Ramaswamy2, Giorgio Sberveglieri1, Gian Domenico Sorarù2
1Sensor Lab; University of Brescia and CNR-IDASC; Brescia I-25133 Italy
2Dipartimento di Ingegneria dei Materiali University of Trento Via Mesiano 77 Trento 38123 Italy

Tóm tắt

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°C has specific surface area of 150 m2/g with pore size in the 2–20 nm range. SiOC sensor shows good response to 5 ppm NO2 at 300°C. NO2 response completely disappears at 400°C, and from this temperature SiOC sensor starts respond to H2. The optimum sensitivity for H2 is obtained at 500°C. SiOC sensor is very selective; it is not sensitive to other gases such as acetone vapor or CO, even at high concentrations.

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Thông tin
Thông tin xuất bản

Journal of the American Ceramic Society

Tập 96 Số 8

2366-2369

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