本研究使用水熱法和化學沉積法合成出二氧化鈦/釩酸銀/石墨烯複合光觸媒，並具有良好的可見光光催化效能。
實驗總共分成三個部分，首先各光觸媒材料將通過X-ray繞射儀、電子能譜儀、拉曼光譜、比表面積分析儀等確認材料物化性質；SEM和TEM觀察光觸媒表面形貌；UV-vis DRS和光致發光譜確認光觸媒的吸光特性。第二部分在實驗中通過可見光和紫外光光源降解亞甲基藍(MB)、羅丹明B(RhB)和甲基橙(MO)的光降解實驗判斷各觸媒的光催化效能，並在實驗結果顯示二氧化鈦/釩酸銀/石墨烯複合具有最佳的光催化特性，其主要原因為二氧化鈦複合釩酸銀可見光光觸媒後可有效提升材料在可見光區的光催化效應，同時再結合石墨烯複合後異質結半導體和石墨烯間彼此良好的電子轉移效率降低了光觸媒的電子-電洞再結合率，進而提升光催化特性。第三部分為光觸媒材料的抗菌實驗探討，在結果上可發現光催化反應和金屬離子兩者機制同時進行下能有效的提升粉體的殺菌效率。
本實驗在應用方面也將光觸媒結合聚氨酯(PU)高分子溶液通過靜電紡絲法製備出有機/無機複合奈米纖維膜，在TEM的結果顯示纖維和粉體間良好的分散性。在抑菌圈的試驗結果顯示纖維膜具有良好的抗菌能力，對未來靜電紡絲纖維膜運用在抗菌相關的製備參數做了先期的製程相關參數評估。

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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