Primo Julia de O, Correa Jamille de S, Horsth Dienifer F L, Das Arkaprava, Zając Marcin, Umek Polona, Wattiez Ruddy, Anaissi Fauze J, Onderwater Rob C A, Bittencourt Carla
Departamento de Química, Universidade Estadual Do Centro-Oeste, Guarapuava 85-040-200, Brazil.
Chimie des Interactions Plasma-Surface (ChIPS), Research Institute for Materials Science and Engineering, University of Mons, 7000 Mons, Belgium.
Nanomaterials (Basel). 2022 Dec 6;12(23):4345. doi: 10.3390/nano12234345.
The COVID-19 pandemic has increased the need for developing disinfectant surfaces as well as reducing the spread of infections on contaminated surfaces and the contamination risk from the fomite route. The present work reports on the antiviral activity of coatings containing ZnO particles obtained by two simple synthesis routes using Aloe vera (ZnO-aloe) or cassava starch (ZnO-starch) as reaction fuel. After detailed characterization using XRD and NEXAFS, the obtained ZnO particles were dispersed in a proportion of 10% with two different waterborne acrylic coatings (binder and commercial white paint) and brushed on the surface of polycarbonates (PC). The cured ZnO/coatings were characterized by scanning electron microscopes (SEM) and energy-dispersive X-ray spectroscopy (EDS). Wettability tests were performed. The virucidal activity of the ZnO particles dispersed in the waterborne acrylic coating was compared to a reference control sample (PC plates). According to RT-PCR results, the ZnO-aloe/coating displays the highest outcome for antiviral activity against SARS-CoV-2 using the acrylic binder, inactivating >99% of the virus after 24 h of contact relative to reference control.
新冠疫情增加了开发消毒表面的需求，同时也需要减少感染在受污染表面的传播以及通过污染物传播途径带来的污染风险。本研究报告了通过两种简单合成路线制备的含氧化锌颗粒涂层的抗病毒活性，这两种路线分别使用芦荟（ZnO-芦荟）或木薯淀粉（ZnO-淀粉）作为反应燃料。在使用X射线衍射（XRD）和近边X射线吸收精细结构光谱（NEXAFS）进行详细表征后，将所得氧化锌颗粒以10%的比例分散在两种不同的水性丙烯酸涂料（粘合剂和商用白色涂料）中，并刷涂在聚碳酸酯（PC）表面。通过扫描电子显微镜（SEM）和能量色散X射线光谱（EDS）对固化后的ZnO/涂料进行表征。进行了润湿性测试。将分散在水性丙烯酸涂料中的氧化锌颗粒的杀病毒活性与参考对照样品（PC板）进行比较。根据逆转录聚合酶链反应（RT-PCR）结果，使用丙烯酸粘合剂时，ZnO-芦荟/涂料对严重急性呼吸综合征冠状病毒2（SARS-CoV-2）的抗病毒活性表现最佳，与参考对照相比，接触24小时后可使>99%的病毒失活。
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