| Summary: | 碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 104 === In this study, the TiO2/Ag3VO4/Gp hybrids was successful prepared by hydrothermal and chemical deposition methods. The TiO2/Ag3VO4/Gp hybrids was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV-vis diffuse reflection spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), specific surfaces area analysis and photoluminescence analysis (PL). The samples performed high photocatalytic activity to degrade the organic pollutant such as the methyl blue (MB), Rhodamine B (RhB) and methyl orange (MO) in visible and UV light irradiation. The result showed the TiO2/Ag3VO4/Gp hybrids has the best photocatalytic activity to degrade the organic compound. It’s attributed to the heterjunction photocatalyst and graphene has the well surface interaction that can enhance the charge transfer to decrease the electron-hole recombination.
The photocatalytic anti-bacterial activity in visible light. S. Aureus was employed to evaluate the anti-bacterial properties of synthesized photocatalyst. The result showed TiO2/Ag3VO4/Gp hybrids has two different mechanism in the anti-bacterial which were the metal ion resistance and photocatalytic anti-bacterial activity.
For the application, the TiO2/Ag3VO4/Gp hybrids were combined with the polyurethane to use the electrospun method to prepare the TiO2/Ag3VO4/Gp/PU nanofiber membranes. TEM showed the hybrids has the well distribution in the nanofibers surface. Final, the zone of inhibition membranes effectiveness showed the well anti-bacterial activity for the membranes.
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