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Sensors 2017, 17(11), 2538; https://doi.org/10.3390/s17112538

New ZnO-Based Glass Ceramic Sensor for H2 and NO2 Detection

1
High Institute for Engineering & Technology, 21 K Cairo-Belbeis Rd, Al-Obour 11828, Egypt
2
INSTM R.U PoliTO-LINCE Laboratory, Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy
3
Faculty of Engineering and Technology, Badr University in Cairo (BUC), Badr 11829, Egypt
4
Department of Applied Science and Technology, Politecnico di Torino, 10129 Torino, Italy
*
Author to whom correspondence should be addressed.
Received: 8 October 2017 / Revised: 30 October 2017 / Accepted: 31 October 2017 / Published: 3 November 2017
(This article belongs to the Special Issue Gas Sensors based on Semiconducting Metal Oxides)
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Abstract

In this study, a glass ceramic with a nominal composition 58ZnO:4Bi2O3:4WO3:33.3B2O3 was synthesized by melt quenching technique. A gas sensor was then manufactured using a ZnO sol-gel phase as a permanent binder of the glass–ceramic to an alumina substrate having interdigitated electrodes. The film sensitivity towards humidity, NH3, H2 and NO2 was studied at different temperatures. X-ray diffraction technique (XRD), field emission- scanning electron microscopy (FE-SEM) and differential thermal analysis (DTA) were used to characterize the prepared material. Though the response in the sub-ppm NO2 concentration range was not explored, the observed results are comparable with the latest found in the literature. View Full-Text
Keywords: glass ceramics; ZnO; sensors; electrical properties; NO2 monitoring glass ceramics; ZnO; sensors; electrical properties; NO2 monitoring
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Hassan, M.; Afify, A.S.; Ataalla, M.; Milanese, D.; Tulliani, J.-M. New ZnO-Based Glass Ceramic Sensor for H2 and NO2 Detection. Sensors 2017, 17, 2538.

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