Nanocrystalline photocatalytic colloid, a method of producing it and its use
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United States of America Patent
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May 26, 2015
Grant Date -
Mar 22, 2012
app pub date -
Feb 26, 2010
filing date -
Feb 26, 2009
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Abstract
The present invention relates to a nanocrystalline photocatalyst active upon visible light irradiation, with a high degree of dispersion, stable in the form of a transparent colloidal solution in an aqueous environment, containing nanocrystals of titanium dioxide (TiO2) surface-modified via direct chemisorption of organic compounds. The present invention in turn relates to a method of producing the material as well as its use as a photosterilizer, photobacteriocide, photomycocide, and/or photocatalyst, in particular for the sterilization of glass surfaces, transparent plastics and transparent materials, in particular contact lenses, medical catheters, glass and plastic conduits as well as other surfaces, whose sterilization is desirable and/or required.
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