School of Textile and Garment, Anhui Polytechnic University, Wuhu, Anhui, 241000, People's Republic of China.
School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
Environ Sci Pollut Res Int. 2022 Jun;29(26):39638-39648. doi: 10.1007/s11356-022-18928-2. Epub 2022 Feb 2.
It is necessary to effectively separate photocatalytic materials from water bodies and reuse catalysts for industrial wastewater treatment. Herein, a novel nanofiber membrane with enhanced light absorption and reusability of photocatalytic materials was prepared. The three-dimensional porous structure of the nanofibers helps the photocatalyst efficiently degrade pollutants. Specifically, a high-efficiency photocatalyst carrier with a nanofiber structure (PAN/PU/β-CD@Ag nanofiber membrane) was prepared by electrospinning and a simple silver plating process, and then ZnO NPs were synthesized in situ on the nanofiber membrane during the hydrothermal process. Under visible-light irradiation, the ZnO-loaded PAN/PU/β-CD@Ag nanofiber membranes exhibited excellent photocatalytic performance for the degradation of methylene blue (MB, 71.5%) and tetracycline hydrochloride (TCH, 70.5%). Additionally, a possible pathway of charge migration in this system was proposed. This design may provide a new idea for the preparation of visible-light photocatalytic nanofiber membranes and their treatments of wastewater containing dyes and hormones.
需要有效地将光催化材料从水体中分离出来，并重复使用催化剂来处理工业废水。在此，制备了一种具有增强光吸收和光催化材料可重复使用性的新型纳米纤维膜。纳米纤维的三维多孔结构有助于光催化剂有效地降解污染物。具体而言，通过静电纺丝和简单的镀银工艺制备了具有纳米纤维结构的高效光催化剂载体（PAN/PU/β-CD@Ag 纳米纤维膜），然后在水热过程中原位合成了 ZnO NPs。在可见光照射下，负载 ZnO 的 PAN/PU/β-CD@Ag 纳米纤维膜对亚甲基蓝（MB，71.5%）和盐酸四环素（TCH，70.5%）的降解表现出优异的光催化性能。此外，还提出了该体系中电荷迁移的可能途径。该设计可能为制备可见光光催化纳米纤维膜及其处理含染料和激素的废水提供新的思路。
