Solovyeva Maria, Zhuravlev Evgenii, Kozlova Yuliya, Bardasheva Alevtina, Morozova Vera, Stepanov Grigory, Kozlov Denis, Lyulyukin Mikhail, Selishchev Dmitry
Research and Educational Center "Institute of Chemical Technologies", Novosibirsk State University, Pirogova St. 2, Novosibirsk 630090, Russia.
Competence Center of the National Technological Initiative "Hydrogen as the Basis of a Low-Carbon Economy", Lavrentieva Ave. 7, Novosibirsk 630090, Russia.
Int J Mol Sci. 2025 Aug 5;26(15):7550. doi: 10.3390/ijms26157550.
The problem of spreading harmful infections through contaminated surfaces has become more acute during the recent coronavirus pandemic. The design of self-cleaning materials, which can continuously decompose biological contaminants, is an urgent task for environmental protection and human health care. In this study, the surface of blended cotton/polyester fabric was functionalized with N-doped TiO (TiO-N) nanoparticles using titanium(IV) isopropoxide as a binder to form durable photoactive coating and additionally decorated with Cu species to promote its self-cleaning properties. The photocatalytic ability of the material with photoactive coating was investigated in oxidation of acetone vapor, degradation of deoxyribonucleic acid (DNA) fragments of various lengths, and inactivation of PA136 bacteriophage virus and fungi under visible light and ultraviolet A (UVA) radiation. The kinetic aspects of inactivation and degradation processes were studied using the methods of infrared (IR) spectroscopy, polymerase chain reaction (PCR), double-layer plaque assay, and ten-fold dilution. The results of experiments showed that the textile fabric modified with TiO-N photocatalyst exhibited photoinduced self-cleaning properties and provided efficient degradation of all studied contaminants under exposure to both UVA and visible light. Additional modification of the material with Cu species substantially improved its self-cleaning properties, even in the absence of light.
在最近的新冠疫情期间，通过受污染表面传播有害感染的问题变得更加严峻。能够持续分解生物污染物的自清洁材料的设计，是环境保护和人类医疗保健的一项紧迫任务。在本研究中，使用异丙醇钛作为粘合剂，用氮掺杂二氧化钛（TiO-N）纳米颗粒对棉/聚酯混纺织物表面进行功能化处理，以形成耐用的光活性涂层，并额外用铜物种进行修饰以提升其自清洁性能。对具有光活性涂层的材料在可见光和紫外光A（UVA）辐射下对丙酮蒸汽的氧化、不同长度脱氧核糖核酸（DNA）片段的降解以及PA136噬菌体病毒和真菌的灭活方面的光催化能力进行了研究。使用红外（IR）光谱法、聚合酶链反应（PCR）、双层噬菌斑测定法和十倍稀释法研究了灭活和降解过程的动力学方面。实验结果表明，用TiO-N光催化剂改性的纺织织物表现出光诱导自清洁性能，并且在UVA和可见光照射下对所有研究的污染物都能实现高效降解。即使在无光条件下，用铜物种对材料进行额外改性也能显著改善其自清洁性能。
