Abstract
Abstract A V-doped titania catalyst was synthesized on titanium substrate by micro-arc oxidation and then it was carried out by heat treatment in nitrogen atmosphere. The surface characteristics of the synthesized titania coatings were investigated by SEM, EDS, XPS and XRD. The synthesized TiO2 coating doped with V (in form of V2O3 and V2O5) showed a large amount of “cellular” bulges with more microscopic defects. The anatase phase of the TiO2 coatings after heat treatment tended to be transformed into rutile phase. As a result, the corrosion resistance and photocatalytic performance of TiO2 coating doped with V after heat treatment had been enhanced.
Highlights
In recent years, photocatalyst materials have attracted significant interest among researchers for application in environmental remediation due to their outstanding photocatalytic performance towards organic pollutants degradation [1,2,3]
The photocatalytic activities of the prepared samples were measured by determining the degradation of methylene blue (MB) solution, and a 8 W ultraviolet lamp was used as the light source of simulated sunlight
X-ray diffraction meter with Cu Kα radiation was used to study the phases of the obtained TiO2 coatings
Summary
Photocatalyst materials have attracted significant interest among researchers for application in environmental remediation due to their outstanding photocatalytic performance towards organic pollutants degradation [1,2,3]. Titanium oxide (TiO2) has become one of the most popular photocatalysis for its chemically inert and photocatalytically stable, and so on. The preparation of photocatalytic TiO2 coatings on the substrates has been the main research direction cur-. The TiO2 coatings formed by MAO were prepared on pure titanium in the electrolytes with or without NaVO3 addition. The obtained coatings were carried out by heat treatment. The microstructure and photocatalytic performance of the TiO2 coatings with or without V doping before and after heat treatment had been comparatively studied. The mechanical, electrochemical and photocatalytic performances of TiO2 coatings were systematicly studied
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