Zuccheri Tommaso, Colonna Martino, Stefanini Ilaria, Santini Cecilia, Gioia Diana Di
Department of Civil, Environmental and Materials Engineering, Alma Mater Studiorum-University of Bologna, via Terracini, 28, Bologna 40131, Italy.
Department of Agricultural Sciences, Alma Mater Studiorum-University of Bologna, viale Fanin 42, Bologna 40136, Italy.
Materials (Basel). 2013 Aug 2;6(8):3270-3283. doi: 10.3390/ma6083270.
The photocatalytic effect of TiO has great potential for the disinfection of surfaces. Most studies reported in the literature use UV activation of TiO₂, while visible light has been used only in a few applications. In these studies, high concentrations of TiO₂, which can compromise surface properties, have been used. In this work, we have developed an acrylic-water paint dispersion containing low TiO₂ content (2 vol %) for the inactivation of microorganisms involved in hospital-acquired infections. The nanoparticles and the coating have been characterized using spectroscopic techniques and transmission electron microscopy, showing their homogenous dispersion in the acrylic urethane coating. A common fluorescent light source was used to activate the photocatalytic activity of TiO₂. The paint dispersion showed antimicrobial activity against , and . The coating containing the TiO₂ nanoparticles maintained good UV stability, strong adhesion to the substrate and high hardness. Therefore, the approach used is feasible for paint formulation aimed at disinfection of healthcare surfaces.
二氧化钛（TiO₂）的光催化效应在表面消毒方面具有巨大潜力。文献中报道的大多数研究使用紫外线激活TiO₂，而可见光仅在少数应用中使用。在这些研究中，使用了高浓度的TiO₂，这可能会影响表面性能。在这项工作中，我们开发了一种丙烯酸 - 水基涂料分散体，其TiO₂含量低（2体积%），用于灭活医院获得性感染中涉及的微生物。使用光谱技术和透射电子显微镜对纳米颗粒和涂层进行了表征，结果表明它们在丙烯酸聚氨酯涂层中均匀分散。使用普通荧光光源激活TiO₂的光催化活性。该涂料分散体对[具体微生物名称1]、[具体微生物名称2]和[具体微生物名称3]表现出抗菌活性。含有TiO₂纳米颗粒的涂层保持了良好的紫外线稳定性、对基材的强附着力和高硬度。因此，所采用的方法对于旨在医疗保健表面消毒的涂料配方是可行的。
