“…They have already proved its antiviral effect against several viruses, such as coronavirus 229 E (Warnes et al, 2015), hepatitis B virus (HBV) (Zan et al, 2007;Lu et al, 2008), herpes simplex virus types 1 (HSV-1) and 2 (HSV-2) and with human parainfluenza virus type 3 (HPIV-3) (Gaikwad et al, 2013), human immunodeficiency virus type 1 (HIV-1) (Borkow and Gabbay, 2004;Lara et al, 2010), influenza virus H1N1 (Borkow et al, 2010;Mori et al, 2013;Monmaturapoj et al, 2018), Norovirus (Warnes and Keevil, 2013;Park et al, 2014), and more recently, against the new coronavirus SARS-CoV-2 (Balagna et al, 2020;Behzadinasab et al, 2020). Gold (Au) and zinc oxide (ZnO) nanoparticles have also proved its biocidal activity, as well as silica compounds and carbon-based materials, such as graphene derivatives (Hasan et al, 2020b;Zhou et al, 2020).…”