A novel photocatalytic reactor was developed to degrade methylene blue in water using titanium dioxide (TiO₂) as a catalyst and fluorinated ethylene propylene (FEP) tubing as a transmitter for ultraviolet (UV) radiation. The reactor was operated by continuously flowing the solution through narrow tubes that were exposed to UV radiation. The efficiency of the reactor was evaluated by comparing it to a previous study that used quartz glass tubing. The study also investigated the effects of flow rate, initial concentration, pH, TiO₂ dose and UV radiation without a catalyst on the degradation of methylene blue. The results showed that the FEP tubing was a more efficient UV transmitter than quartz glass. The efficiency of the reactor was also affected by the flow rate and pH of the solution. The highest degradation efficiency was achieved at a flow rate of 10 mL/min and a pH of 7.0. The use of TiO₂ as a catalyst also significantly improved the degradation efficiency, with an almost doubling of the degradation rate when compared to the case without a catalyst. This study demonstrates the potential of the FEP tubing-based photocatalytic reactor for the degradation of methylene blue in water. The reactor is easy to operate and can be scaled up for industrial applications.

开发了一种新型光催化反应器，使用二氧化钛 (TiO ₂ ) 作为催化剂，使用氟化乙烯丙烯 (FEP) 管作为紫外线 (UV) 辐射发射器来降解水中的亚甲基蓝。通过使溶液连续流过暴露于紫外线辐射的窄管来操作反应器。通过与之前使用石英玻璃管的研究进行比较来评估反应器的效率。该研究还研究了流速、初始浓度、pH、TiO ₂剂量和无催化剂的紫外辐射对亚甲基蓝降解的影响。结果表明，FEP 管是比石英玻璃更有效的紫外线传输器。反应器的效率还受到溶液的流速和pH值的影响。当流速为 10 mL/min、pH 为 7.0 时，降解效率最高。使用TiO ₂作为催化剂也显着提高了降解效率，与不使用催化剂的情况相比，降解率几乎翻倍。这项研究展示了基于 FEP 管的光催化反应器降解水中亚甲基蓝的潜力。该反应器易于操作，并且可以扩大规模以用于工业应用。