Abstract
In recent years, photocatalysts have been used in various fields, and are particularly attracting attention in the fields of environment, medicine, and agriculture. A large number of catalytic active sites are required to produce a more efficient photocatalyst, and for that purpose, a large specific surface area is desired. Therefore, in this study, in order to develop a highly active photocatalytic material, the outer diameter of titanium oxide nanotubes was controlled by a template synthesis method using carbon nanotubes with different outer diameters to increase the specific surface area. Characterization was carried out by using diffent analytical instruments such as UV-Spectrophotomoter, XRD, SEM, TEM, BET. Results show using titanium oxide nanotubes with a smaller outer diameter tended to have higher photocatalytic activity (almost complete degradation was obtained when 10-20nm was used).
Highlights
In recent years, technology for controlling the production of titanium oxide at the nanoscale level has become extremely important
Hydrothermal synthesis methods, anodizing methods, and template synthesis methods have been proposed for the production of titanium oxide nanotubes
It has been clarified that the titanium oxide nanotubes synthesized by the conventional hydrothermal synthesis method lose their tube shape and become particulate at the firing stage where the crystal layer appears (Weng et al, 2006; Yu and Wang, 2008; Fujishima et al, 2000; Tao et al, 2008; Gong et al, 2001)
Summary
Technology for controlling the production of titanium oxide at the nanoscale level has become extremely important. Hydrothermal synthesis methods, anodizing methods, and template synthesis methods have been proposed for the production of titanium oxide nanotubes. It has been clarified that the titanium oxide nanotubes synthesized by the conventional hydrothermal synthesis method lose their tube shape and become particulate at the firing stage where the crystal layer appears (Weng et al, 2006; Yu and Wang, 2008; Fujishima et al, 2000; Tao et al, 2008; Gong et al, 2001). The template synthesis method has an advantage that the morphology of the titanium oxide nanotubes produced can be controlled (Mor et al, 2003; Huang et al, 2010). The prepared titanium oxide nanotubes were applied to the decolorization of the dye (Acid Red 88), and the photocatalytic activity of each was evaluated
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