Lys Andrii, Myndrul Valerii, Pavlenko Mykola, Anastaziak Błażej, Holec Pavel, Vodseďálková Kateřina, Coy Emerson, Bechelany Mikhael, Iatsunskyi Igor
NanoBioMedical Centre, Adam Mickiewicz University, 61-712 Poznan, Poland.
Sensor Engineering Department, Faculty of Science and Engineering, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands.
Nanomaterials (Basel). 2025 Sep 5;15(17):1371. doi: 10.3390/nano15171371.
As the demand for clean water continues to rise, the development of reliable and environmentally sustainable purification methods has become increasingly important. In this study, we describe the production and characterization of electrospun polyimide (PID) nanofibers modified with MXene (TiCTx), tungsten trioxide (WO), and titanium dioxide (TiO) nanomaterials for improved photocatalytic degradation of rhodamine 6G (R6G), a model organic dye. Superior photocatalytic performance was achieved by suppressing electron-hole recombination, promoting efficient charge carrier separation, and the significant increase in light absorption through the addition of metal oxide nanowires and MXene to the PID matrix. Comprehensive characterization confirms a core-shell nanofiber architecture with TiO, WO, and MXene effectively integrated and electronically coupled, consistent with the observed photocatalytic response. The PID/TiO/WO/MXene composite exhibited the highest photocatalytic activity among the tested configurations, degrading R6G by 74% in 90 min of light exposure. This enhancement was ascribed to the synergistic interactions between MXene and the metal oxides, which reduced recombination losses and promoted effective charge transfer. The study confirms the suitability of PID-based hybrid nanofibers for wastewater treatment applications. It also points toward future directions focused on scalable production and deployment in the field of environmental remediation.
随着对清洁水的需求持续增长，开发可靠且环境可持续的净化方法变得愈发重要。在本研究中，我们描述了用MXene（TiCTx）、三氧化钨（WO）和二氧化钛（TiO）纳米材料改性的电纺聚酰亚胺（PID）纳米纤维的制备及其特性，以改善对罗丹明6G（R6G）（一种典型有机染料）的光催化降解性能。通过抑制电子 - 空穴复合、促进有效电荷载流子分离以及通过向PID基质中添加金属氧化物纳米线和MXene显著增加光吸收，实现了优异的光催化性能。综合表征证实了具有有效整合且电子耦合的TiO、WO和MXene的核壳纳米纤维结构，这与观察到的光催化响应一致。在测试的配置中，PID/TiO/WO/MXene复合材料表现出最高的光催化活性，在光照90分钟内将R6G降解了74%。这种增强归因于MXene与金属氧化物之间的协同相互作用，其减少了复合损失并促进了有效的电荷转移。该研究证实了基于PID的混合纳米纤维在废水处理应用中的适用性。它还指出了未来专注于可扩展生产以及在环境修复领域部署的方向。
