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

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...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2017-11, Vol.17 (11), p.2538
Main Authors: Hassan, Mohamed, Afify, Ahmed S, Ataalla, Mohamed, Milanese, Daniel, Tulliani, Jean-Marc
Format: Article
Language:English
Subjects:
Aluminum oxide
Ammonia
electrical properties
Electron microscopy
Emission analysis
Field emission microscopy
Gas sensors
Glass ceramics
Microstructure
Nitrogen dioxide
NO2 monitoring
sensors
Sol-gel processes
Thermal analysis
X-ray diffraction
Zinc oxide
ZnO
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Summary: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.
ISSN:1424-8220
1424-8220
DOI:10.3390/s17112538