Liu Jiaxiu, Zhu Yukun, Chen Jingying, Butenko Denys S, Ren Jun, Yang Xianfeng, Lu Ping, Meng Pingping, Xu Yan, Yang Dongjiang, Zhang Shuchao
Department of Blood Transfusion & Department of Nephrology & Medical Research Center & Department of Physical Medicine and Rehabilitation, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266003, China; School of Basic Medicine, Medical College, Qingdao University, Qingdao 266071, China.
Department of Blood Transfusion & Department of Nephrology & Medical Research Center & Department of Physical Medicine and Rehabilitation, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao 266003, China; School of Environmental Science and Engineering, State Key Laboratory of Bio-fibers and Eco-textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Qingdao University, Qingdao 266071, China.
J Hazard Mater. 2021 Jul 5;413:125462. doi: 10.1016/j.jhazmat.2021.125462. Epub 2021 Feb 19.
Photocatalytic water disinfection has emerged as a promising approach for water purification. However, exploring efficient and rapid visible light driven materials for photocatalytic bacterial inactivation is still a challenging problem. Herein, red phosphorus/titanium oxide (TiO@RP) nanofibers were developed for effective water disinfection by a vacuum ampoule strategy. The complete E. coli and S. aureus (7-log CFU mL) could be rapidly killed within 25 min and 30 min over the optimized TiO@RP heterostructure under the white LED irradiation. The efficient photocatalytic antibacterial activity should be mainly ascribed to the synergetic enhancement in light absorption by RP decoration and charge migration and separation by the interface between TiO and RP. And then more unpaired photo-carriers would be transferred to the surface to facilitate the generation of photo-holes, •O radicals, and HO species, which could destroy the bacterial cells efficiently.
光催化水消毒已成为一种很有前景的水净化方法。然而，探索高效、快速的可见光驱动材料用于光催化细菌灭活仍然是一个具有挑战性的问题。在此，通过真空安瓿策略开发了用于有效水消毒的红磷/二氧化钛（TiO@RP）纳米纤维。在白色发光二极管照射下，在优化的TiO@RP异质结构上，完整的大肠杆菌和金黄色葡萄球菌（7个对数级CFU/mL）可在25分钟和30分钟内迅速被杀灭。高效的光催化抗菌活性应主要归因于RP修饰对光吸收的协同增强以及TiO和RP之间界面的电荷迁移和分离。然后更多未成对的光载流子会转移到表面，促进光生空穴、•O自由基和HO物种的产生，从而有效地破坏细菌细胞。
