Synthesis of TiO2 nanostructure by anodic oxidation

Ahmad Nor Hisham, Nurul Asyikin (2016) Synthesis of TiO2 nanostructure by anodic oxidation. Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

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Abstract

TiO2 nanotubes have been synthesized in pure Ti sheet by anodic oxidation method. Various parameters were investigated such as the effect of voltages and time. TiO2 nanotube morphology and phase formed were characterized. Annealing effect of TiO2 nanotubes formed crystal structures and phases can be observed as anatase and rutile. The optimum sample is in the organic electrolyte solution containing 95 ml of the EG added to 1M, 5 ml H2O2 and 0.3 g of ammonium fluoride (NH4F) followed annealed at 450oC is subject to photocatalytic tests. The Field Emission Scanning Electron Microscope (FESEM) used for Ultra-high magnification imaging observation. XRD and Raman Spectroscopies confirm phases such as anatase and rutile formed after the annealing process. Raman spectroscopy used to support the morphology and phase obtained from FESEM and XRD analysis. In conclusion, the structure of TiO2 nanotubes formed on sheets of pure Ti is 30 minutes, 60 V in the electrolyte during oxidation anode, followed by annealing at 450oC to produce the best morphology and phase. The sample has tested the optimal parameters for process degredation of methyl orange.

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