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Review

Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces

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Department of Mechanical and Construction Engineering, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
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Department of Applied Sciences, Northumbria University, Newcastle upon Tyne NE1 8ST, UK
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School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine BT52 1SA, UK
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Biomaterials and Bioengineering Lab, Centro de Investigación Traslacional San Alberto Magno, Universidad Católica de Valencia San Vicente Mártir, c/Guillem de Castro 94, 46001 Valencia, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Ana María Díez-Pascual
Int. J. Mol. Sci. 2022, 23(3), 1162; https://doi.org/10.3390/ijms23031162
Received: 3 December 2021 / Revised: 14 January 2022 / Accepted: 19 January 2022 / Published: 21 January 2022
(This article belongs to the Special Issue Frontiers in Antimicrobial Materials)
International interest in metal-based antimicrobial coatings to control the spread of bacteria, fungi, and viruses via high contact human touch surfaces are growing at an exponential rate. This interest recently reached an all-time high with the outbreak of the deadly COVID-19 disease, which has already claimed the lives of more than 5 million people worldwide. This global pandemic has highlighted the major role that antimicrobial coatings can play in controlling the spread of deadly viruses such as SARS-CoV-2 and scientists and engineers are now working harder than ever to develop the next generation of antimicrobial materials. This article begins with a review of three discrete microorganism-killing phenomena of contact-killing surfaces, nanoprotrusions, and superhydrophobic surfaces. The antimicrobial properties of metals such as copper (Cu), silver (Ag), and zinc (Zn) are reviewed along with the effects of combining them with titanium dioxide (TiO2) to create a binary or ternary contact-killing surface coatings. The self-cleaning and bacterial resistance of purely structural superhydrophobic surfaces and the potential of physical surface nanoprotrusions to damage microbial cells are then considered. The article then gives a detailed discussion on recent advances in attempting to combine these individual phenomena to create super-antimicrobial metal-based coatings with binary or ternary killing potential against a broad range of microorganisms, including SARS-CoV-2, for high-touch surface applications such as hand rails, door plates, and water fittings on public transport and in healthcare, care home and leisure settings as well as personal protective equipment commonly used in hospitals and in the current COVID-19 pandemic. View Full-Text
Keywords: antimicrobial; coating; high-touch surface; superhydrophobic; nanoprotrusion; SARS-CoV-2 antimicrobial; coating; high-touch surface; superhydrophobic; nanoprotrusion; SARS-CoV-2
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MDPI and ACS Style

Birkett, M.; Dover, L.; Cherian Lukose, C.; Wasy Zia, A.; Tambuwala, M.M.; Serrano-Aroca, Á. Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces. Int. J. Mol. Sci. 2022, 23, 1162. https://doi.org/10.3390/ijms23031162

AMA Style

Birkett M, Dover L, Cherian Lukose C, Wasy Zia A, Tambuwala MM, Serrano-Aroca Á. Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces. International Journal of Molecular Sciences. 2022; 23(3):1162. https://doi.org/10.3390/ijms23031162

Chicago/Turabian Style

Birkett, Martin, Lynn Dover, Cecil Cherian Lukose, Abdul Wasy Zia, Murtaza M. Tambuwala, and Ángel Serrano-Aroca. 2022. "Recent Advances in Metal-Based Antimicrobial Coatings for High-Touch Surfaces" International Journal of Molecular Sciences 23, no. 3: 1162. https://doi.org/10.3390/ijms23031162

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