| Titre : |
Using visible light to activate antiviral and antimicrobial properties of TiO2 nanoparticles in paints and coatings : focus on new developments for frequent-touch surfaces in hospitals |
| Type de document : |
texte imprimé |
| Auteurs : |
M. Schutte-Smith, Auteur ; E. Erasmus, Auteur ; R. Mogale, Auteur ; N. Marogoa, Auteur ; A. Jayiya, Auteur ; H. G. Visser, Auteur |
| Année de publication : |
2023 |
| Article en page(s) : |
p. 789-817 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Antibactériens
Dioxyde de titane
Enrobage (technologie)
Lumière visible
Nanoparticules
Photocatalyse
Revêtements antiviraux
Revêtements organiques
Revêtements:Peinture
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The COVID-19 pandemic refocused scientists the world over to produce technologies that will be able to prevent the spread of such diseases in the future. One area that deservedly receives much attention is the disinfection of health facilities like hospitals, public areas like bathrooms and train stations, and cleaning areas in the food industry. Microorganisms and viruses can attach to and survive on surfaces for a long time in most cases, increasing the risk for infection. One of the most attractive disinfection methods is paints and coatings containing nanoparticles that act as photocatalysts. Of these, titanium dioxide is appealing due to its low cost and photoreactivity. However, on its own, it can only be activated under high-energy UV light due to the high band gap and fast recombination of photogenerated species. The ideal material or coating should be activated under artificial light conditions to impact indoor areas, especially considering wall paints or frequent-touch areas like door handles and elevator buttons. By introducing dopants to TiO2 NPs, the bandgap can be lowered to a state of visible-light photocatalysis occurring. Naturally, many researchers are exploring this property now. This review article highlights the most recent advancements and research on visible-light activation of TiO2-doped NPs in coatings and paints. The progress in fighting air pollution and personal protective equipment is also briefly discussed. |
| Note de contenu : |
- TOWARD VISIBLE-LIGHT ACTIVITY-DOPING : Metal dopants: reducing band gap energy - Non-metal dopants: reducing band gap energy - Photocatalytic activity - Antibacterial activity : crystal properties and dopants for visible-light photocatalytic disinfection - Dopants in coatings and paints - Dopants and incorporation into textiles - Antimicrobial activity of TiO2 in coatings and paint
- ENVIRONMENTALLY FRIENDLY SYNTHESIS OF TIO2
- FINAL THOUGHTS AND FUTURE PROSPECTS |
| DOI : |
https://doi.org/10.1007/s11998-022-00733-8 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-022-00733-8.pdf?pdf=button% [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39430 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 789-817
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