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Ethanol-Sensing Characteristics of Nanostructured ZnO: Nanorods, Nanowires, and Porous Nanoparticles
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2017 (English)In: Journal of Electronic Materials, ISSN 0361-5235, E-ISSN 1543-186XArticle 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 sheet-like hydrozincite, whereas the nanorods and nanowires were grown byhydrothermal and chemical vapor deposition methods, respectively. Themorphology and crystal structure of the synthesized materials were charac-terized by 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.
Keyword [en]
ZnO, porous nanoparticles, nanorods, nanowires, gas sensors
National Category
Other Materials Engineering
Identifiers
URN: urn:nbn:se:uu:diva-320148DOI: 10.1007/s11664-016-5270-2OAI: oai:DiVA.org:uu-320148DiVA: diva2:1088827
Available from: 2017-04-16 Created: 2017-04-16 Last updated: 2017-04-19
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