Motaung, DEMhlongo, Gugu HKortidis, INkosi, SSMalgas, GFMwakikunga, Bonex WRay, Suprakas SKiriakidis, G2013-11-252013-11-252013-08Motaung, 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 142-1490169-4332http://ac.els-cdn.com/S0169433213007605/1-s2.0-S0169433213007605-main.pdf?_tid=2e66a554-5361-11e3-a7ea-00000aacb361&acdnat=1385116440_157df9a08832439063d128c8ce293e33http://hdl.handle.net/10204/7092https://www.sciencedirect.com/science/article/pii/S0169433213007605https://doi.org/10.1016/j.apsusc.2013.04.056Copyright: 2013 Elsevier. This is an ABSTRACT ONLY. The definitive version is published in Applied Surface Science, vol. 279, pp 142-149We 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.enZnOSpray pyrolysisGas sensingSemiconducting metal oxidesMethaneArticleMotaung, D., Mhlongo, G. H., Kortidis, I., Nkosi, S., Malgas, G., Mwakikunga, B. W., ... Kiriakidis, G. (2013). Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing. http://hdl.handle.net/10204/7092Motaung, DE, Gugu H Mhlongo, I Kortidis, SS Nkosi, GF Malgas, Bonex W Mwakikunga, Suprakas S Ray, and G Kiriakidis "Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing." (2013) http://hdl.handle.net/10204/7092Motaung D, Mhlongo GH, Kortidis I, Nkosi S, Malgas G, Mwakikunga BW, et al. Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing. 2013; http://hdl.handle.net/10204/7092.TY - Article AU - Motaung, DE AU - Mhlongo, Gugu H AU - Kortidis, I AU - Nkosi, SS AU - Malgas, GF AU - Mwakikunga, Bonex W AU - Ray, Suprakas S AU - Kiriakidis, G AB - 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. DA - 2013-08 DB - ResearchSpace DP - CSIR KW - ZnO KW - Spray pyrolysis KW - Gas sensing KW - Semiconducting metal oxides KW - Methane LK - https://researchspace.csir.co.za PY - 2013 SM - 0169-4332 T1 - Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing TI - Structural and optical properties of ZnO nanostructures grown by aerosol spray pyrolysis: candidates for room temperature methane and hydrogen gas sensing UR - http://hdl.handle.net/10204/7092 ER -