Ethanol-Sensing Characteristics of Nanostructured ZnO: Nanorods, Nanowires, and Porous Nanoparticles
2017 (English)In: Journal of Electronic Materials, ISSN 0361-5235, E-ISSN 1543-186XArticle in journal (Refereed) Published
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
ZnO, porous nanoparticles, nanorods, nanowires, gas sensors
Other Materials Engineering
IdentifiersURN: urn:nbn:se:uu:diva-320148DOI: 10.1007/s11664-016-5270-2OAI: oai:DiVA.org:uu-320148DiVA: diva2:1088827