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Published in: Journal of Materials Science 20/2021

09-04-2021 | Composites & nanocomposites

Effect of C6H14N2O7 and reaction temperature on sensing properties of hierarchical WO3 for H2S sensor

Authors: Mojie Sun, Shiyuan Zhang, Zhenye Zhang, Hang Zhang, Yang Wang, Xuejie Jing, Xiaochen Song

Published in: Journal of Materials Science | Issue 20/2021

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Abstract

In this study, WO3 nanoparticles with hierarchical structures are prepared by a simple hydrothermal method using diammonium hydrogen citrate (C6H14N2O7) as an additive, and the effects of reaction temperature and addition of C6H14N2O7 on their morphology are investigated in detail. The physical properties and morphology of the prepared WO3 materials are analyzed by scanning electron microscopy, X-ray diffraction , transmission electron microscopy, and Brunauer–Emmett–Teller method, and a possible growth mechanism is proposed. The results show that C6H14N2O7 is adsorbed on the edges of the nanosheets and inhibits their anisotropic growth. In addition, based on this material, sensors are self-assembled for detecting the decomposition products of SF6, and the gas-sensitive properties of the material are investigated. The experimental results show that the sensors based on WO3 with hierarchical structures are highly sensitive to H2S and exhibit a low operating temperature. This indicates that such sensors can be effectively used to detect the main decomposition products of SF6.

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Literature
16.
go back to reference Leidinger M (2018) Methods for increasing the sensing performance of metal oxide semiconductor gas sensors at ppb concentration levels. Ph.D Dissertation, University of Saarland Leidinger M (2018) Methods for increasing the sensing performance of metal oxide semiconductor gas sensors at ppb concentration levels. Ph.D Dissertation, University of Saarland
Metadata
Title
Effect of C6H14N2O7 and reaction temperature on sensing properties of hierarchical WO3 for H2S sensor
Authors
Mojie Sun
Shiyuan Zhang
Zhenye Zhang
Hang Zhang
Yang Wang
Xuejie Jing
Xiaochen Song
Publication date
09-04-2021
Publisher
Springer US
Published in
Journal of Materials Science / Issue 20/2021
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-06054-2

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