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New Paint Based On Titanium Nanoparticles Creates Self-Cleaning Surfaces
hypnosec writes: Scientists have created a paint that provides self-cleaning surfaces and can maintain them even after being wiped, scratched, or scuffed. The paint, composed of titanium dioxide (TiO2) nanoparticles, is delivered as a suspension in ethanol containing the chemical perfluorooctyltriethoxysilane (abstract). Once the coating is applied to a surface, the ethanol must evaporate for 180 seconds before it is ready for use. Depending on the surface, the coating can be sprayed, dipped, or painted.
Careless manufacturing and reckless use of nano particle anything could be trouble in the future. But don't worry nothing will happen for 10 or more years
All ready being noted. Not 10 years down the track. Sunscreens as a Source of Hydrogen Peroxide Production in Coastal Waters
Conservative estimates for a Mediterranean beach reveal that tourism activities during a summer day may release on the order of 4 kg of TiO2 nanoparticles to the water and produce an increment in the concentration of H2O2 of 270 nM/day. Our results, together with the data provided by tourism records in the Mediterranean, point to TiO2 nanoparticles as the major oxidizing agent entering coastal waters, with direct ecological consequences on the ecosystem.
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A fluoroorganosiloxane makes a coating of teflon-like molecules (like T-Fal(R)) that can adhere to metal oxide surfaces. You can find similar fluoroorganosiloxanes in glass/coating protection products.
I think that this is interesting but if someone wants to do this cheap, then use diatomaceous earth that is coated with this compound. I sometimes wonder why that our nano-nano science needs to make something that is already found in nature.