Antiviral activity of galvanic microcells of zinc and copper contained within painted surfaces

Abstract

This study presents research related to the antiviral activity of painted surfaces containing galvanic microcells of zinc and copper. The aim of this study was to investigate the virucidal activity of galvanic microcells of zinc and copper grains fixed with adequate homogeneity and degree of aggregation in water-based acrylic paint layers in reference to a non-treated reference control. This paper provides evidence that a paint coating with a total copper surface area of 4.4% displays antiviral activity against human coronavirus NL63 according to ISO 21702 and inactivates > 99% of virus after 4 h of contact relative to a non-treated reference control.

Virucidal PVP-Copper Salt Composites against Coronavirus Produced by Electrospinning and Electrospraying

“…Thus, our study results suggest that this virucidal action occurs as a result of the release of Cu 2+ ions from copper sulfate dissociation into the culture medium of the virucidal test, which can promote an electrostatic interaction of Cu 2+ ions with the viral model, leading to the destruction of the coronavirus. Moreover, the interaction of Cu 2+ ions with coronavirus RNA can promote ROS production and cause its destruction [ 48 , 49 ].…”

Nanoparticles and essential oils with antiviral activity on packaging and surfaces: An overview of their selection and application

“…3. Antiviral paints and coatings: Paint formulations with Zn and Cu particles as galvanic microcells have been reported recently as a feasible way to deploy antiviral coatings, presenting virucidal activity against human coronavirus (Spisak et al, 2022). Different types of AgNPs embedded paints and coatings have been proposed (Shirvanimoghaddam et al, 2021), although commercial application due to safety precautions remains an issue.…”

“…Thus, considering the ZnO NPs antiviral properties against HSV ‐1 and ‐2 and H1N1, their use in antiviral lotions or sunscreens has been hinted in the literature (J. Yang et al, 2021). Antiviral paints and coatings : Paint formulations with Zn and Cu particles as galvanic microcells have been reported recently as a feasible way to deploy antiviral coatings, presenting virucidal activity against human coronavirus (Spisak et al, 2022). Different types of AgNPs embedded paints and coatings have been proposed (Shirvanimoghaddam et al, 2021), although commercial application due to safety precautions remains an issue. Antiviral packaging for food preservation : Antiviral coatings and films for food preservation, as well as other applications, have been outlined in the literature, mainly AgNPs, in some cases embedded in polymeric matrices (Carbone et al, 2016; Castro‐Mayorga, Randazzo, et al, 2017; L. Chen & Liang, 2020).…”

Antiviral Properties against SARS-CoV-2 of Nanostructured ZnO Obtained by Green Combustion Synthesis and Coated in Waterborne Acrylic Coatings

“…The severe accurate respiratory syndrome coronavirus 2 (SARS-CoV-2) is a single-stranded positive-strand RNA virus with an envelope and belongs to the family of beta coronaviruses [ 2 ]. These respiratory RNA viruses are highly contagious, and the primary transmission mode is through exposure to respiratory droplets [ 3 ]. Another route of SARS-CoV-2 transmission may also be the deposition of droplets on surfaces, forming fomites, subsequently assimilated by a person via touch [ 4 ].…”

“…Since touching joint surfaces, i.e., door handles, toilets, taps, and work surfaces, is considered a potential transmission route, the World Health Organization (WHO) recommends surface disinfection to reduce the risk of contamination from the fomite route [ 7 ]. This is the most recommended method to reduce the risk of transmission of viruses, including COVID-19 [ 3 ]. Chemical-based surface disinfectants such as hydrogen peroxide, sodium hypochlorite, and alcohol are used worldwide for disinfection [ 8 ]; however, after disinfection using these products, the surface can be contaminated again by an infected person.…”