News und Presse

24 Sep 2009
Light-activated anticorrosion

A protective coating that stops corrosion as soon as it starts has been developed by European scientists. The new coating is activated by daylight and is less toxic than before, they claim. Ekaterina Skorb and colleagues from the Max Planck Institute, Potsdam, Germany, encased a known corrosion inhibitor, benzotriazole, inside the pores of light-sensitive titanium nanoparticles. When exposed to UV light, a change at the nanoparticle surface switches the containers to the open state, releasing the inhibitor. This was amazing because we can see in real time, after irradiating the surface, these containers open immediately,' says Dr. Skorb.

The complete version on http://www.rsc.org/Publishing/ChemScience/Volume/2009/11/Light_activated_anticorrosion.asp

28 Juli 2009
Photocontrollable coatings

The photocatalytically-active coatings were obtained by immobilizing titania nanoparticles into a sol– gel-derived SiOx:ZrOx matrix. The resultant hybrid films show high photocatalytic, photobiocide and excellent corrosion protection properties which exhibit no degradation during the course of long-term irradiation with UV light. The possibility of a UV-induced opening of titania-based polyelectrolyte containers embedded into SiOx:ZrOx film is also demonstrated that opens fresh opportunities in developing photocontrollable coatings capable to release encapsulated chemical agents under illumination.

http://www.rsc.org/Publishing/Journals/jm/article.asp?Type=Issue&Journalcode=JM&Issue=28&SubYear=2009&Volume=19&Page=0&GA=on



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