Nguyen, H.T.T. and Truong, T.H. and Nguyen, T.D. and Dang, V.T. and Vu, T.V. and Nguyen, S.T. and Cu, X.P. and Nguyen, T.T.O. (2020) Ni-doped WO3 flakes-based sensor for fast and selective detection of H2S. Journal of Materials Science: Materials in Electronics, 31 (15). pp. 12783-12795. ISSN 9574522
Ni-doped WO3 flakes-based sensor for fast and selective detection of H2S.pdf
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Abstract
In this work, we report on the synthesis of Ni-doped WO3 flakes by the hydrothermal method. The physical and chemical properties of the synthesized Ni-doped WO3 flakes were thoroughly investigated by scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, Raman spectroscopy, photoluminescence spectrum, X-ray diffraction, X-ray photoelectron spectroscopy, and N2 adsorption–desorption measurement, thereby confirming the effect of Ni doping on H2S-sensing properties. The sensitivity to H2S gas of Ni-doped WO3 flakes showed short response/recovery times of 17 s/110 s, high stability, good selectivity, and low operating temperature of 250 °C. Due to the increasing surface defects and oxygen vacancies with the presence of Ni2+ ions in the structure of WO3 flakes, the Ni-doped WO3 sensor exhibited a better sensing of H2S gas than the pristine WO3 sensor. This result indicates that the Ni-doped WO3 flake structure is promising for detecting H2S gas as a selective, inexpensive, and outstanding sensor materials. © 2020, Springer Science+Business Media, LLC, part of Springer Nature.
Item Type: | Article |
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Divisions: | Faculties > Faculty of Vehicle and Energy Engineering |
Identification Number: | 10.1007/s10854-020-03830-9 |
Uncontrolled Keywords: | Energy dispersive spectroscopy; High resolution transmission electron microscopy; Hydrothermal synthesis; Photoelectron spectroscopy; Photoluminescence spectroscopy; Scanning electron microscopy; Surface defects; Tungsten compounds; X ray photoelectron spectroscopy; Desorption measurements; Hydrothermal methods; Low operating temperature; Photoluminescence spectrum; Physical and chemical properties; Scanning electrons; Selective detection; Sensor materials; Nickel compounds |
Additional Information: | Language of original document: English. |
URI: | http://eprints.lqdtu.edu.vn/id/eprint/8967 |