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Erschienen in: Journal of Materials Science 27/2020

15.06.2020 | Energy materials

New design of mesoporous SiO2 combined In2O3-graphene semiconductor nanocomposite for highly effective and selective gas detection

verfasst von: Kamrun Nahar Fatema, Suresh Sagadevan, Yin Liu, Kwang Youn Cho, Chong-Hun Jung, Won-Chun Oh

Erschienen in: Journal of Materials Science | Ausgabe 27/2020

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Abstract

We successfully prepared multiple gas sensing devices comprising of a thin-film sensor made with mesoporous silica combined In2O3-graphene semiconductor nanocomposite for sensing CO2, O2, and NH3. We demonstrated that our sensor had high selectivity for CO2 by recognizing O2 and NH3 in the vapor stage with accurate transformation into electrical signals in devices. The mesoporous semiconducting In2O3–GO–SiO2-10% (IGS10) sensor showed quick response/recovery times for detecting gases, including CO2, O2, and NH3. Compared to In2O3, In2O3–GO (IG), and In2O3–GO–SiO2-20% (IGS20), the mesoporous IGS10 showed superior gas sensing ability due to the implied optimum ratio of the synthesized sample. Finally, we proved a facile, low-cost route to attain the multiple gas sensing devices with the potential for vast application.

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Metadaten
Titel
New design of mesoporous SiO2 combined In2O3-graphene semiconductor nanocomposite for highly effective and selective gas detection
verfasst von
Kamrun Nahar Fatema
Suresh Sagadevan
Yin Liu
Kwang Youn Cho
Chong-Hun Jung
Won-Chun Oh
Publikationsdatum
15.06.2020
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 27/2020
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-020-04928-5

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