Browsing by Subject "Titanium dioxide"
Now showing items 1-7 of 7
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Characterisation and photocatalytic assessment of TiO2 nano-polymorphs: influence of crystallite size and influence of thermal treatment on paint coatings and dye fading kinetics
(Elsevier, 2019)A study on the thermal effects on TiO2 rutile and anatase nano-powders was undertaken and displayed some unusual photoactivity and crystal structure properties. Rutile nano-particles with different crystallite sizes were ... -
The effect of crystalline phase (anatase, brookite and rutile) and size on the photocatalytic activity of calcined polymorphic titanium dioxide (TiO2)
(Elsevier, 2018)The effect of thermal treatment on the morphology (crystalline phase and size) and photocatalytic activity of freshly prepared TiO2 nano-powder is communicated. TiO2 nano-powders, prepared by hydrolyzing titanium ... -
Exposure to silica during the production of titanium dioxide from beach sand
(North-West University, 2012)Silica is a common silicon dioxide (SiO2) that can be crystalline or non-crystalline (amorphous). Amorphous silica is considered to be less hazardous than crystalline silica. Three dominant crystalline polymorphs exist, ... -
The impeding effect of dissolved oxygen on the photocatalytic reduction of [PdCln(H2O)4−n]2−n (n = 0–4) complexes employing different TiO2 photocatalysts in the absence of an added sacrificial reducing agent
(Elsevier, 2013)The photocatalytic reduction of chloro-aqua palladium(II) complexes, [PdCln(H2O)4−n]2−n (n = 0-4), as a means of palladium metal recovery and waste water purification, was investigated employing four different titanium ... -
Photocatalytic reduction of platinum(II and IV) from their chloro complexes in a titanium dioxide suspension in the absence of an organic sacrificial reducing agent
(Elsevier, 2014)The thermodynamics and surface chemistry affecting the photocatalytic reduction of chloro aqua platinum( II) and platinum(IV) complexes as means of platinum recovery from solution are communicated. The photocatalytic ... -
The synthesis and use of nitrogen derived titanates for the adsorption of uranium from aqueous waste streams
(North-West University (South Africa), 2020)The synthesis and use of layered hydrazinium and ammonium titanate as an adsorbent for uranium in a nitric acid solution was investigated. Several different titanate synthesis methods were identified from literature. Three ... -
Use of ion-assisted sputtering technique for producing photocatalytic titanium dioxide thin films: influence of thermal treatments on structural and activity properties based on the decomposition of stearic acid
(Elsevier, 2018)Titanium dioxide thin films were deposited by the reactive ion-assisted sputtering method from titanium targets at various partial pressures and deposition parameters. The films were deposited onto substrates at temperatures ...
