Behrangi Sahand, Staňková Eva, Sedláček Ivo, Šimoníková Lucie, Souček Pavel, Buršíková Vilma, Sochora Vjačeslav, Novotný Karel, Vašina Petr
Department of Plasma Physics and Technology, Faculty of Science, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic.
Czech Collection of Microorganisms, Department of Experimental Biology, Faculty of Science, Masaryk University, Kamenice 5, 62500 Brno, Czech Republic.
Nanomaterials (Basel). 2024 Mar 10;14(6):496. doi: 10.3390/nano14060496.
ZrN-Cu coatings containing two different amounts of Cu (~11 at.% and ~25 at.%) were deposited using an industrial physical vapor deposition (PVD) system. The as-deposited coatings exhibited 100% bactericidal efficiency against CCM 3988 for an exposure time of 40 min. Subsequently, the samples were attached onto our faculty's door handles for six months to study the coatings' long-term effectiveness and durability under actual operational conditions. The samples were periodically evaluated and it was observed that the coatings with 25 at.% Cu performed better than the ones with 11 at.% Cu. For example, following 15 days of being touched, the bactericidal effectiveness of the sample containing 25 at.% Cu dropped to 65% while it fell to 42% for the sample containing 11 at.%. After 6 months, however, both samples showed bactericidal efficiency of ~16-20%. The bactericidal efficiency of the samples touched for 6 months was successfully restored by polishing them. Furthermore, a group of samples was kept untouched and was also evaluated. The untouched samples with Cu content of ~25 at.% did not show any drop in their bactericidal properties after 6 months. ZrN-Cu coatings were concluded to be promising materials for self-sanitizing application on high-touch surfaces.
使用工业物理气相沉积（PVD）系统沉积了含有两种不同铜含量（约11原子百分比和约25原子百分比）的ZrN-Cu涂层。沉积后的涂层在40分钟的暴露时间内对CCM 3988表现出100%的杀菌效率。随后，将样品附着在我们学院的门把手上六个月，以研究涂层在实际使用条件下的长期有效性和耐久性。定期对样品进行评估，观察到含25原子百分比铜的涂层比含11原子百分比铜的涂层表现更好。例如，触摸15天后，含25原子百分比铜的样品的杀菌效果降至65%，而含11原子百分比铜的样品则降至42%。然而，6个月后，两个样品的杀菌效率均约为16%-20%。通过对触摸6个月的样品进行抛光，其杀菌效率成功恢复。此外，还保留了一组未触摸的样品并进行了评估。铜含量约为25原子百分比的未触摸样品在6个月后其杀菌性能没有任何下降。得出结论，ZrN-Cu涂层是用于高接触表面自清洁应用的有前途的材料。
