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Browsing by Subject "Sol-gel"

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Analysis of the structure, particle morphology and photoluminescent properties of ZnS:Mn2+ nanoparticulate phosphors

Author: Raleaooa, PV ; Roodt, A ; Mhlongo, Gugu H ; Motaung, David E ; Ntwaeaborwa, OM Date: Jan 2018 The structure, particle morphology and photoluminescent properties of n(sup2+) doped ZnS nanoparticles are reported. The X-ray powder diffraction studies showed that incorporation of Mn(sup2+) did not cause any change to the crystallized cubic ... Read more
Carbon nanotube/nickel oxide nanocomposite thin films for selective solar absorber

Author: Roro, Kittessa T ; Mwakikunga, Bonex W ; Forbes, A ; Tile, N ; Yalisi, B Date: Sep 2010 Multi-walled carbon nanotube (MWCNT)/Nickel oxide nanocomposites were prepared on aluminum substrates for selective solar absorber applications. MWCNTs are functionalized in order to disperse in water and ethanol. Results from the characterization ... Read more
Fabrication of high efficacy selective solar absorbers

Author: Tile, N Date: Mar 2012 High efficiency tandem selective solar absorber materials of carbon in nickel oxide (C-NiO) composite were fabricated on an aluminium substrate using a simple and cost effective sol-gel process. The process involved preparation of carbon and ... Read more
Influence of precursor ratios on the properties of cotton coated with a sol-gel flame retardant

Author: Chapple, Stephen A ; Ferg, E Date: Nov 2006 Cotton has many desirable properties, but is flammable. The flame retardant treatment of cotton is an important textile process. To study the effect of a sol-gel phosphate-based flame-retardant coating on fabric properties (flammability, ... Read more
Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites

Author: Raleaooa, PV ; Roodt, A ; Mhlongo, Gugu H ; Motaung, David E ; Kroon, RE ; Ntwaeaborwa, OM Date: Feb 2017 The structure, particle morphology, optical and magnetic properties of ZnO, ZnS and ZnO-ZnS nanoparticles prepared by the sol-gel method are reported. ZnO and ZnS were combined at room temperature by an ex situ synthetic route to prepare ... Read more
Optical properties of selectively absorbing C/NiO nanocomposite coatings

Author: Roro, Kittessa T ; Tile, N ; Forbes, A Date: Dec 2010 Nanocomposite thin films are widely used for solar thermal applications. Using carbon nanoparticle containing metal oxide as a spectrally selective solar absorber coating has grown significantly in recent years. Recently, Katumba et al. have ... Read more
Selective solar absorber coating research at the CSIR (South Africa)

Author: Roro, Kittessa T ; Tile, N ; Yalisi, B ; De Gama, M ; Wittes, T ; Roberts, T ; Forbes, A Date: May 2011 A sol-gel technique has been established at a laboratory scale for low cost production of high efficient selective solar absorbers comprising a composite material of nano-structured carbon in a nickel oxide matrix. In order for these materials ... Read more
Sol-gel fabrication and optical absorption properties of C-NiO nanocomposite coatings

Author: Tile, N ; Roro, Kittessa T ; Forbes, A Date: Dec 2010 This paper discusses the process of sol-gel fabrication and the optical absorption properties of C-NiO nanocomposite coatings. Read more
Sol-gel preparation and characterization of Er3+ doped TiO2 luminescent nanoparticles

Author: Talane, TE ; Mbule, PS ; Noto, LL ; Shingange, Katekani ; Mhlongo, Gugu H ; Mothudi, BM ; Dhlamini, MS Date: Dec 2018 The present paper reports on down-and up-conversion luminescence behaviour of sol-gel derived erbium doped titanium dioxide with anatase structure. Through combined structural, optical and electron microscope analysis, effective and influence ... Read more
Synthesis and electrochemical properties of LiNi0.4Mn1.5Cr0.1O4 and Li4Ti5O12

Author: Liu, GQ ; Wen, L ; Liu, GY ; Luo, HZ ; Ma, BY ; Wu, QY ; Tian, YW Date: Aug 2011 Spinel compound LiNi0.4Mn1.5Cr0.1O4 (LNMCO) and Li4Ti5O12 (LTO) were synthesized by the sol-gel method and the solid-state method, respectively. The particle sizes of the products LiNi0.4Mn1.5Cr0.1O4 and Li4Ti5O12 were 0.5 to 2 um and 0.5 to ... Read more

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Browsing by Subject "Sol-gel"

Browsing by Subject "Sol-gel"

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