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Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers

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dc.contributor.author Khamlich, S
dc.contributor.author McCrindle, R
dc.contributor.author Nuru, ZY
dc.contributor.author Cingo, N
dc.contributor.author Maaza, M
dc.date.accessioned 2013-11-15T05:34:57Z
dc.date.available 2013-11-15T05:34:57Z
dc.date.issued 2013-01
dc.identifier.citation Khamlich, S, McCrindle, R, Nuru, ZY, Cingo, N and Maaza, M. 2013. Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers. Applied Surface Science, Vol. 265, pp 745-749 en_US
dc.identifier.issn 0169-4332
dc.identifier.uri http://hdl.handle.net/10204/7067
dc.description Copyright: 2013 Elsevier. This is an abstract only. en_US
dc.description.abstract A cost-effective and environmentally friendly green chemical method, the so-called aqueous chemical growth (ACG) method, was used to deposit chromium/alpha-chromium(III) oxide, Cr/a-Cr2O3, monodispersed particles, for solar absorbers applications. The deposited particles were annealed at various temperatures in a hydrogen atmosphere for 2 h to study the annealing temperature dependence of the structural, chemical and optical properties of the particles grown on tantalum substrates. The deposited Cr/a-Cr2O3 was characterized by X-ray diffraction (XRD), attenuated total reflection (ATR), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and diffuse reflectance UV–vis–NIR spectroscopy. The XRD and ATR analysis indicated that by increasing annealing temperature, the particles crystallinity was improved and Ta2O5 was formed around 600 C, due to the fast oxygen diffusion from the deposited a-Cr2O3 toward the tantalum substrate. The optical measurements show that samples annealed at 400 and 500 C exhibit the targeted high absorbing optical characteristics of “Black chrome”, while those annealed below 400 C and above 500 C show a significant low absorptivity and high emissivity. en_US
dc.language.iso en en_US
dc.publisher Elsevier Publishers en_US
dc.relation.ispartofseries Workflow request;10118
dc.subject Solar absorbers en_US
dc.subject Chromium(III) oxide en_US
dc.subject Aqueous chemical growth en_US
dc.title Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers en_US
dc.type Article en_US
dc.identifier.apacitation Khamlich, S., McCrindle, R., Nuru, Z., Cingo, N., & Maaza, M. (2013). Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers. http://hdl.handle.net/10204/7067 en_ZA
dc.identifier.chicagocitation Khamlich, S, R McCrindle, ZY Nuru, N Cingo, and M Maaza "Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers." (2013) http://hdl.handle.net/10204/7067 en_ZA
dc.identifier.vancouvercitation Khamlich S, McCrindle R, Nuru Z, Cingo N, Maaza M. Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers. 2013; http://hdl.handle.net/10204/7067. en_ZA
dc.identifier.ris TY - Article AU - Khamlich, S AU - McCrindle, R AU - Nuru, ZY AU - Cingo, N AU - Maaza, M AB - A cost-effective and environmentally friendly green chemical method, the so-called aqueous chemical growth (ACG) method, was used to deposit chromium/alpha-chromium(III) oxide, Cr/a-Cr2O3, monodispersed particles, for solar absorbers applications. The deposited particles were annealed at various temperatures in a hydrogen atmosphere for 2 h to study the annealing temperature dependence of the structural, chemical and optical properties of the particles grown on tantalum substrates. The deposited Cr/a-Cr2O3 was characterized by X-ray diffraction (XRD), attenuated total reflection (ATR), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), and diffuse reflectance UV–vis–NIR spectroscopy. The XRD and ATR analysis indicated that by increasing annealing temperature, the particles crystallinity was improved and Ta2O5 was formed around 600 C, due to the fast oxygen diffusion from the deposited a-Cr2O3 toward the tantalum substrate. The optical measurements show that samples annealed at 400 and 500 C exhibit the targeted high absorbing optical characteristics of “Black chrome”, while those annealed below 400 C and above 500 C show a significant low absorptivity and high emissivity. DA - 2013-01 DB - ResearchSpace DP - CSIR KW - Solar absorbers KW - Chromium(III) oxide KW - Aqueous chemical growth LK - https://researchspace.csir.co.za PY - 2013 SM - 0169-4332 T1 - Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers TI - Annealing effect on the structural and optical properties of Cr/ -Cr2O3 monodispersed particles based solar absorbers UR - http://hdl.handle.net/10204/7067 ER - en_ZA


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