Background

The removal of phenol from aqueous solution via photocatalytic degradation has been recognized as an environmentally friendly technique for generating clean water. The composite nanofibers containing PAN polymer, CNT, and TiO₂ NPs were successfully prepared via electrospinning method. The prepared photocatalyst is characterized by SEM, XRD, and Raman spectroscopy. Different parameters are studied such as catalyst amount, the effect of pH, phenol concentration, photodegradation mechanism, flow rate, and stability of the composite nanofiber to evaluate the highest efficiency of the photocatalyst.

Results

The composite nanofibers showed the highest photodegradation performance for the removal of phenol using UV light within 7 min. The pH has a major effect on the photodegradation of phenol with its maximum performance being at pH 5.

Conclusions

Given the stability and flexibility of the composite nanofibers, their use in a dynamic filtration is possible and can be even reused after several cycles.

中文翻译：

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复合纳米纤维在紫外线下快速光催化降解水中的苯酚

背景

通过光催化降解从水溶液中除去苯酚已被认为是产生清洁水的环境友好技术。通过静电纺丝法成功地制备了含PAN聚合物，CNT和TiO ₂ NPs的复合纳米纤维。制备的光催化剂通过SEM，XRD和拉曼光谱表征。研究了不同的参数，例如催化剂用量，pH值的影响，苯酚浓度，光降解机理，流速和复合纳米纤维的稳定性，以评估光催化剂的最高效率。

结果

复合纳米纤维在7分钟内显示出最高的光降解性能，可用于使用UV光去除苯酚。pH对苯酚的光降解有重要影响，其最大性能是在pH 5时。

结论

考虑到复合纳米纤维的稳定性和柔韧性，它们在动态过滤中的应用是可能的，甚至可以在几个循环后重复使用。