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Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing

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dc.contributor.author Motaung, DE
dc.contributor.author Mhlongo, Gugu H
dc.contributor.author Kortidis, I
dc.contributor.author Nkosi, SS
dc.contributor.author Malgas, GF
dc.contributor.author Mwakikunga, Bonex W
dc.contributor.author Ray, Suprakas S
dc.contributor.author Kiriakidis, G
dc.date.accessioned 2013-11-25T12:56:34Z
dc.date.available 2013-11-25T12:56:34Z
dc.date.issued 2013-08
dc.identifier.citation Motaung, D.E. et al. 2013. Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing. Applied Surface Science, vol. 279, pp 142-149 en_US
dc.identifier.issn 0169-4332
dc.identifier.uri http://ac.els-cdn.com/S0169433213007605/1-s2.0-S0169433213007605-main.pdf?_tid=2e66a554-5361-11e3-a7ea-00000aacb361&acdnat=1385116440_157df9a08832439063d128c8ce293e33
dc.identifier.uri http://hdl.handle.net/10204/7092
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0169433213007605
dc.identifier.uri https://doi.org/10.1016/j.apsusc.2013.04.056
dc.description Copyright: 2013 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Applied Surface Science, vol. 279, pp 142-149 en_US
dc.description.abstract We report on the synthesis of ZnO films by aerosol spray pyrolysis method at different deposition times.The surface morphology, crystal structure and the cross-sectional analysis of the prepared ZnO filmswere characterized by X-ray diffraction (XRD), focused ion beam scanning electron microscopy (FIB-SEM), atomic force microscopy (AFM) and high resolution transmission electron microscopy (HR-TEM).XRD analysis revealed that the ZnO films are polycrystalline in nature. Structural analysis exploiting cross-sectional TEM profile showed that the films composed of nano-particles and columnar structures growing perpendicular to the substrate. AFM revealed that the columnar structures have a higher surface roughness as compared to the nanoparticles. The effect of ZnO crystallite size and crystallinity on the gassensing performance of hydrogen and methane gases was also evaluated. Sensing film based on ZnO nanoparticles has numerous advantages in terms of its reliability and high sensitivity. These sensing materials revealed an improved response to methane and hydrogen gases at room temperature due to their high surface area, indicating their possible application as a gas sensor. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;11312
dc.subject ZnO en_US
dc.subject Spray pyrolysis en_US
dc.subject Gas sensing en_US
dc.subject Semiconducting metal oxides en_US
dc.subject Methane en_US
dc.title Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing en_US
dc.type Article en_US


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