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Oxidative Inactivation of SARS-CoV-2 on Photoactive AgNPs@TiO<sub>2</sub> Ceramic Tiles
oleh: Ridha Djellabi, Nicoletta Basilico, Serena Delbue, Sarah D’Alessandro, Silvia Parapini, Giuseppina Cerrato, Enzo Laurenti, Ermelinda Falletta, Claudia Letizia Bianchi
Format: | Article |
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Diterbitkan: | MDPI AG 2021-08-01 |
Deskripsi
The current <i>SARS-CoV-2</i> pandemic causes serious public health, social, and economic issues all over the globe. Surface transmission has been claimed as a possible <i>SARS-CoV-2</i> infection route, especially in heavy contaminated environmental surfaces, including hospitals and crowded public places. Herein, we studied the deactivation of <i>SARS-CoV-2</i> on photoactive AgNPs@TiO<sub>2</sub> coated on industrial ceramic tiles under dark, UVA, and LED light irradiations. <i>SARS-CoV-2</i> inactivation is effective under any light/dark conditions. The presence of AgNPs has an important key to limit the survival of <i>SARS-CoV-2</i> in the dark; moreover, there is a synergistic action when TiO<sub>2</sub> is decorated with Ag to enhance the virus photocatalytic inactivation even under LED. The radical oxidation was confirmed as the the central mechanism behind <i>SARS-CoV-2</i> damage/inactivation by ESR analysis under LED light. Therefore, photoactive AgNPs@TiO<sub>2</sub> ceramic tiles could be exploited to fight surface infections, especially during viral severe pandemics.