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A Surface Coating that Rapidly Inactivates SARS-CoV-2

2020; American Chemical Society; Volume: 12; Issue: 31 Linguagem: Inglês

10.1021/acsami.0c11425

1944-8252

Saeed Behzadinasab, Alex W. H. Chin, Mohsen Hosseini, Leo L. M. Poon, William A. Ducker,

SARS-CoV-2 detection and testing

SARS-CoV-2, the virus that causes the disease COVID-19, remains viable on solids for periods of up to 1 week, so one potential route for human infection is via exposure to an infectious dose from a solid. We have fabricated and tested a coating that is designed to reduce the longevity of SARS-CoV-2 on solids. The coating consists of cuprous oxide (Cu2O) particles bound with polyurethane. After 1 h on coated glass or stainless steel, the viral titer was reduced by about 99.9% on average compared to the uncoated sample. An advantage of a polyurethane-based coating is that polyurethane is already used to coat a large number of everyday objects. Our coating adheres well to glass and stainless steel as well as everyday items that people may fear to touch during a pandemic, such as a doorknob, a pen, and a credit card keypad button. The coating performs well in the cross-hatch durability test and remains intact and active after 13 days of being immersed in water or after exposure to multiple cycles of exposure to the virus and disinfection.