Patent ID: 8545899
Filing Date: 2013-10-01
Classification: A01N,C03C,Y10T

Abstract:
1. A method of forming an anatase titanium dioxide coating having a roughened surface on a substrate, comprising: preparing a titanium dioxide sol-gel composition; adding colloidal silica particles to the titanium dioxide sol-gel composition to form a combined titanium dioxide and colloidal silica sol-gel composition, wherein the colloidal silica particles have an average particle size of about 70 nm to about 100 nm; coating the substrate with the combined sol-gel composition; and heating the coated substrate at a temperature ranging from about 550° C. to about 650° C. to form a surface roughened anatase titanium dioxide coating; wherein the surface roughened titanium dioxide coating has a mean square roughness ranging from about 8 nm to about 12 nm; and wherein the combined titanium dioxide and colloidal silica sol-gel composition comprises colloidal silica in an amount less than or equal to about 20 wt % relative to a total weight of the sol-gel composition.