(Digital Presentation) Synthesis and Characterization of Au-Doped TiO2

Abstract

We used a three-step anodization procedure to produce titanium oxide (TiO2) nanotubes in order to investigate the effects of varied electrolyte concentrations and anodization voltages on optical characteristics. Different electrolyte solution concentrations and anodization voltages altered wall thicknesses and tube diameters, according to our observations from the XRD pattern, TEM pictures, and optical examinations. While the band gap and band edge values of TiO2 nanotubes altered with different anodization voltages, the band gap, and band edge values remained constant. Furthermore, we discovered that at various electrolyte solution concentrations, the optimum solution concentration for growing compact TiO2 nanotubes is 70 percent porosity. Various morphologies of TiO2 nanostructures, such as sheet, rod, and tube, were obtained in the next section of the study by modifying the experimental settings (e.g., growth methods, differently used gases, and process temperatures). Titanium dioxide (TiO2) nanosheets, nanorods, and nanotubes were created utilizing anodizing methods and chemical vapor deposition (CVD). TiO2 nanorods were synthesized on treated Ti foil with HCl by CVD after TiO2 nanosheets coated with Au catalyst were grown in CVD. TiO2 nanotubes are then manufactured using a three-step anodization method. We found that produced nanostructures can be used for a variety of applications due to compatibility changes in morphological, structural, and optical properties.