US Patent 8188005 - TiO2 nanoparticles for promoting plant growth

http://www.freepatentsonline.com/8188005.html

Titanium oxide nanomaterials have been found useful for solar cells and memory resistors. This latest patent teaches how TiO2 nanoparticles can assist in photosynthesis and promote plant growth. Claim 1 reads:

1. A liquid composition for promoting plant growth containing titanium dioxide nanoparticles, wherein the liquid composition contains, as an active ingredient, an aqueous solution prepared by adjusting the pH of colloidal titanium dioxide, a plant growth promoting component, to 0.4-0.6, in order to prevent rapid precipitation of the colloidal titanium dioxide, and then diluting the colloidal titanium dioxide with water to a predetermined concentration.