本論文旨在研究利用水熱法合成有機金屬框材(MOF)，選用水穩定性高的NH2-MIL-53(Fe)，並與光催化粉體BiOBr複合，研究此複材在可見光下，光降解有機汙染物的效率。複合材料NH2-MIL-53(Fe)@ BiOBr具有p-n異質結，具有異質結的光催化劑能促進光激發電子-電洞對的分離，有利於光催化反應的進行。且複合材料相比於單一材料的能帶隙相比較低，藉由較低的能帶隙可促使導電度上升，進而降低光催化反應時所需要的能量。
本實驗研究NH2-MIL-53(Fe)@ BiOBr的重量比對光催化性能所產生的不同影響。結果表明，在120分鐘以內，NH2-MIL-53(Fe)@ BiOBr能降解90%以上的抗生素與染料。
與使用粉體相比，使用薄膜的回收效率更好，因此本論文選用廢棄偏光板回收之三醋酸纖維素(rTAC)，將其藉由靜電紡絲技術與本實驗所合成之NH2-MIL-53(Fe)@ BiOBr粉體混合並製備成薄膜。以此複合材料纖維膜進行光催化實驗，其光效果與粉體材料同樣顯著，並能避免光能的損失與同時解決粉體材料不易回收的問題，本研究之複合材料纖維膜可實現重複使用，達到循環再利用之效果。

In this study, a metal-organic framework (MOF) was synthesized through a hydrothermal method. NH2-MIL-53(Fe) was selected and combined with a photocatalytic powder BiOBr. The efficiency of photodegradation of organic pollutants of this composite under visible light was then studied.
The photocatalyst composite material NH2-MIL-53(Fe)@BiOBr has a p-n heterojunction which can promote the separation of photoexcited electron-hole pairs and produce a photocatalytic reaction. In addition, the energy bandgap of the composite material was shown to be lower than that of a single material. This promotes an increase in electrical conductivity, thereby reducing the energy required for photocatalytic reactions.
In this experiment, the different effects of the weight ratio of NH2-MIL-53(Fe)@BiOBr on the photocatalytic performance were investigated. The results revealed that NH2-MIL-53(Fe)@BiOBr could degrade more than 90% of tetracycline within 120 minutes. Under the irradiation of visible light, the photocatalytic decomposition of water for hydrogen production also exhibited excellent results.
Due to the powders are not easy to recycle, this study used recycled cellulose triacetate (rTAC) and combined it with NH2-MIL-53(Fe)@BiOBr via electrospinning to form thin films. The composite film exhibits a remarkable photocatalytic effect, which can avoid the loss of light energy and the loss caused by material powder recovery, thereby improving the reuse efficiency.

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