Effective integration of nanostructured photocatalysts into polymer matrices is crucial for the broad practical application of fiber-based photocatalytic composite textiles. Herein, highly durable TiO₂/TPU composite fibers with high TiO₂ content (>30 wt. %) were prepared through wet spinning using 1D electrospun TiO₂ nanofibers (TNFs). Due to the fiber reinforcement principle, the TNF/TPU composite fibers exhibited superior mechanical properties compared with pure TPU fibers. Furthermore, the TNF/TPU composite fibers with a ratio of 1:2 process impressive degradation efficiency for rhodamine B (RhB). The orientation of 1D TNFs and stronger interface between TNF and TPU matrices not only enable the excellent load sharing and transfer effects following fiber pullout and crack bridging mechanisms, but also improve photogenerated charge transfer efficiency, resulting in high strength and high photocatalytic activity. In addition, enhanced TNF exposure on the fiber is due to the hollow and porous structures of composite fibers, which is advantageous for photocatalytic degradation. Notably, when the RhB concentration exceeded 15 ppm, the TNF/TPU composite fibers exhibited higher degradation efficiency than the TNF powder. Therefore, TNF/TPU composite fiber–based textiles with high photocatalytic activity and strength are promising for overcoming the separation and recovery issues of nanostructured catalysts in practical wastewater treatment applications.

将纳米结构光催化剂有效集成到聚合物基体中对于纤维基光催化复合纺织品的广泛实际应用至关重要。本文中，使用一维电纺TiO ₂纳米纤维(TNFs)通过湿法纺丝制备了具有高TiO ₂含量(％3E30wt.％)的高耐用TiO ₂ /TPU复合纤维。由于纤维增强原理，TNF/TPU复合纤维与纯TPU纤维相比表现出更优异的机械性能。此外，比例为1:2的TNF/TPU复合纤维对罗丹明B（RhB）的降解效率令人印象深刻。一维 TNF 的取向以及 TNF 和 TPU 基质之间更强的界面不仅能够在纤维拔出和裂纹桥接机制后实现优异的负载共享和转移效果，而且还可以提高光生电荷转移效率，从而产生高强度和高光催化活性。此外，由于复合纤维的中空和多孔结构，增强了纤维上TNF的暴露，这有利于光催化降解。值得注意的是，当RhB浓度超过15 ppm时，TNF/TPU复合纤维表现出比TNF粉末更高的降解效率。因此，具有高光催化活性和强度的TNF/TPU复合纤维基纺织品有望克服纳米结构催化剂在实际废水处理应用中的分离和回收问题。