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Ethanol-Sensing Characteristics of Nanostructured ZnO: Nanorods, Nanowires, and Porous Nanoparticles
(International Training Institute for Materials Science, Hanoi University of Science and Technology)
(International Training Institute for Materials Science, Hanoi University of Science and Technology)
Hanoi University of Science and Technology. (ITIMS)
Hanoi University of Science and Technology. (ITIMS)
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2017 (English)In: Journal of Electronic Materials, ISSN 0361-5235, E-ISSN 1543-186X, p. 1-6Article in journal (Refereed) Published
Abstract [en]

The morphology and crystalline size of metal oxide-sensing materials arebelieved to have a strong influence on the performance of gas sensors. In thispaper, we report a comparative study on the ethanol-sensing characteristics ofZnO nanorods, nanowires, and porous nanoparticles. The porous ZnOnanoparticles were prepared using a simple thermal decomposition of a sheetlikehydrozincite, whereas the nanorods and nanowires were grown byhydrothermal and chemical vapor deposition methods, respectively. Themorphology and crystal structure of the synthesized materials were characterizedby field-emission scanning electron microscopy and x-ray diffraction.Ethanol gas-sensing characteristics were systematically studied at differenttemperatures. Our findings show that for ethanol gas-sensing applications,ZnO porous nanoparticles exhibited the best sensitivity, followed by thenanowires and nanorods. Gas-sensing properties were also examined withrespect to the role of crystal growth orientation, crystal size, and porosity.

Place, publisher, year, edition, pages
2017. p. 1-6
Keywords [en]
ZnO, porous nanoparticles, nanorods, nanowires, gas sensors
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-320588DOI: 10.1007/s11664-016-5270-2OAI: oai:DiVA.org:uu-320588DiVA, id: diva2:1090067
Available from: 2017-04-21 Created: 2017-04-21 Last updated: 2017-04-21

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