Journal
ACS NANO
Volume 3, Issue 7, Pages 1753-1760Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn900347x
Keywords
laser regulation; light-stimulated; release; containers; corrosion healing
Categories
Funding
- Nano-Futur program of the German Ministry for Education and EU FP7 project MUST [NMP3- CP-IP 214261-2]
- Research (BMBF)
- Basic Research Foundation of Belarus and Volkswagen Foundation
- Formation of bifunctional coatings on metals based on self-locating nano- and microcontainers
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We introduce a novel and versatile approach to the corrosion protection by use of smart laser-controllable coating. The main advantage of the proposed technique is that one could terminate the corrosion process by very intensive healing after an appearance of corrosion centers using local laser irradiation. It is also shown that by applying a polyelectrolyte shell with noble metal particles over the mesoporous titania and silica in. a layer-by-layer assembly it is possible to fabricate micro- and nanoscaled reservoirs, which, being incorporated into the zirconia-organosilica matrix, are responsible for the ability of laser-driven release of the loaded materials (e.g., corrosion inhibitor). Furthermore, the resultant films are highly adhesive and could be easily deposited onto different metallic substrates. Laser-mediated remote release of incorporated corrosion inhibitor (benzotriazole) from engineered mesoporous containers with silver nanoparticles in the container shell is observed in real time on single and multicontainer levels.
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