Delta SARS-CoV-2 inactivation and bactericidal performance of cotton wipes decorated with TiO 2 /Ag nanoparticles like Brazilian heavy-fruited Myrciaria cauliflora

• Published in: Materials today communications Vol. 33; p. 104288
• Main Authors: da Silva, Daniel J, Duran, Adriana, Cabral, Aline D, Fonseca, Fernando L A, Bueno, Rodrigo F, Wang, Shu Hui, Rosa, Derval S
• Format: Journal Article
• Language: English
• Published: England 01.12.2022
• Subjects: Antimicrobial; COVID-19; SARS-CoV-2; Cotton, Silver; TiO2
• ISSN: 2352-4928

The current pandemic of Coronavirus Disease 2019 (COVID-19) raised several concerns about using conventional textiles for manufacturing personal protective equipment without self-disinfecting properties since the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) is transmitted mainly by aerosols that can transpose cotton masks. Therefore, developing new cotton fibers with high self-disinfecting ability is essential to avoid a new pandemic due to new SARS-CoV-2 variants. Herein, we developed cotton wipes (CFs) with fibers coated by Ag, TiO , and Ag/TiO hybrid nanoparticles like Brazilian heavy-fruited by a sonochemical approach. Moreover, the coated CFs present high antimicrobial performance against ( ) and ( ), being able to inactivate infectious SARS-CoV-2 (Delta variant) by the destruction of the spike, membrane, and nucleocapsid proteins while the viral RNA is not significantly affected, according to the molecular biological findings.