Preparation and Characterization of Rutile-Type TiO2 Doped with Cu
Source abstract
Abstract
Visible-light active photocatalysts were prepared by doping Cu-TiO 2 through the sol-gel method. The influence of the preparation conditions such as pH of sol-gel solution and calcination temperature on the properties of TiO 2 -Cu was investigated. The presence of Cu caused reduction of band-gap energy, which was more visible in the rutile-type TiO 2 . Low pH of sol-gel solution such as pH 1.5 favorized formation of rutile during calcination and caused slower growth of the crystallites with increasing temperature of calcination in comparison with sol-gel prepared at pH 3. XPS measurements showed that Cu was placed mostly on the surface of TiO 2 . For sample calcined at 600 °C, the surface concentration of copper was 1.1 wt.%. The presence of both, rutile phase and Cu, increased adsorption of phenol and facilitated its photocatalytic decomposition. Moreover, reduced band-gap energy in rutile-type TiO 2 -Cu photocatalyst enabled phenol decomposition under visible light.
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Research context
OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (56)
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