Larger nanoparticles in the sizes of 30 nm and 50 nm were also found to be potent, but there was an observed trend of broader spectrum activity and lower cytotoxicity for smaller Ag nanoparticles, possibly due to their ability to more easily bind virions [27] , [24] , [31] .
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Antiviral nanoparticles for sanitizing surfaces: A roadmap to self-sterilizing against COVID-19.
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