Silver and titanium dioxide based optically transparent antimicrobial coatings and related methods
AssigneeNorthwestern University
InventorsKimberly A. Gray, Yechan Won, Kevin Schwartzenberg
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Abstract
Methods of reducing microbial attachment to a surface are provided, including methods comprising illuminating a surface comprising a substrate and a coating on the substrate with ultraviolet light, wherein the coating comprises anatase titanium dioxide nanoparticles functionalized with silver nanoparticles and is optically transparent to visible light; and exposing the illuminated surface to microbes. The coating exhibits a reduction in microbial attachment as compared to the coating absent the illumination.
Claims18
A method of reducing microbial attachment to a surface, the method comprising:
- illuminating a surface comprising a substrate and a coating on the substrate with ultraviolet light, wherein the coating consists of anatase titanium dioxide nanoparticles functionalized with silver nanoparticles and is optically transparent to visible light;
- and
- exposing the illuminated surface to microbes,
- wherein the coating exhibits a reduction in microbial attachment as compared to the coating absent the illumination.
A method of making an antimicrobial surface, the method comprising:
- applying a suspension of anatase titanium dioxide nanoparticles functionalized with silver nanoparticles to a substrate to form a coating thereon, wherein the coating is optically transparent to visible light and wherein the coating exhibits a reduction in microbial attachment under illumination with ultraviolet light as compared to the coating absent the illumination;
- wherein the coating consists of the anatase titanium dioxide nanoparticles functionalized with silver nanoparticles.
An antimicrobial surface comprising a substrate and a coating thereon, the coating consisting of anatase titanium dioxide nanoparticles functionalized with silver nanoparticles, wherein the coating is optically transparent to visible light and wherein the coating exhibits a reduction in microbial attachment under illumination with ultraviolet light as compared to the coating absent the illumination.
Dependencies are inferred from the claim text.