Nanocoatings: Universal antiviral surface solution against COVID-19

• Published in: Progress in organic coatings Vol. 163; p. 106670
• Main Authors: Vijayan P, Poornima, P.G, Chithra, Abraham, Pinky, George, Jesiya Susan, Maria, Hanna J., T, Sreedevi, Thomas, Sabu
• Format: Journal Article
• Language: English
• Published: Switzerland Elsevier B.V 01-02-2022; Elsevier BV
• Subjects: Antiviral coating; Chitosan; Coronaviruses; COVID-19; Depletion; Glycoproteins; Graphene; Metal oxides; Nanocomposites; Nanofibers; Nanomaterials; Nanoparticles; Nanostructure; Nucleotides; Polymers; Protective coatings; Review; SARS-CoV-2; Severe acute respiratory syndrome coronavirus 2; Substrates; Textile composites; Viral diseases; Viruses; Nanomaterials; SARS-CoV-2; Covid-19; Antiviral coating
• ISSN: 0300-9440; 1873-331X
• DOI: 10.1016/j.porgcoat.2021.106670

In the current scenario, there is critical global demand for the protection of daily handling surfaces from the viral contamination to limit the spread of COVID-19 infection. The nanotechnologists and material scientists offer sustainable solutions to develop antiviral surface coatings for various substrates including fabrics, plastics, metal, wood, food stuffs etc. to face current pandemic period. They create or propose antiviral surfaces by coating them with nanomaterials which interact with the spike protein of SARS-CoV-2 to inhibit the viral entry to the host cell. Such nanomaterials involve metal/metal oxide nanoparticles, hierarchical metal/metal oxide nanostructures, electrospun polymer nanofibers, graphene nanosheets, chitosan nanoparticles, curcumin nanoparticles, etched nanostructures etc. The antiviral mechanism involves the repletion (depletion) of the spike glycoprotein that anchors to surfaces by the nanocoating and makes the spike glycoprotein and viral nucleotides inactive. The nature of interaction between the nanomaterial and virus depends on the type nanostructure coating over the surface. It was found that functional coating materials can be developed using nanomaterials as their polymer nanocomposites. The various aspects of antiviral nanocoatings including the mechanism of interaction with the Corona Virus, the different type of nanocoatings developed for various substrates, future research areas, new opportunities and challenges are reviewed in this article.
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•There is a global demand for antiviral coatings over daily handling surfaces to protect from viral contamination.•Antiviral surfaces coated with nanomaterials interact with the spike protein of SARS-CoV-2 to inhibit viral entry.•The nanocoatings offer sustainable solution to develop universal antiviral surface to face current pandemic.•Recent progress and key findings on antiviral nanocoatings especially against Corona Virus models are reviewed.•Future research areas, new opportunities and challenges in antiviral surface coatings are also discussed.