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Release of corrosion inhibitor studied

Monday, 7 March 2011

The release kinetics of cerium titanium oxide nanocontainer inhibitors was studied in ancorrosive environment.

Release of corrosion inhibitor studied Source: Heubach

Release of corrosion inhibitor studied Source: Heubach

Evaggelos D. Mekeridis and his colleagues synthesized cerium titanium oxide nanocontainers through a two-step process and then loaded with corrosion inhibitors 2-mercaptobenzothiazole (2-MB) and 8-hydroxyquinoline (8-HQ). First, polystyrene nanospheres (PS) were produced using polymerization in suspension. Second, the PS spheres were coated via the solgel method to form a cerium titanium oxide layer. Finally, the nanocontainers were made by calcination of the coated PS nanospheres. The size of the containers was 180 ± 10 nm as determined by Scanning Electron Microscopy (SEM). X-Ray Diffraction Analysis (XRD) showed that the nanocontainers consist of anatase and cerianite crystalline phases. The presence and loading of the inhibitors in the nanocontainers was confirmed with Fourier Transform Infrared Spectroscopy (FTIR) and Thermo Gravimetric Analysis (TGA), respectively. TGA revealed the amount of 10.43 and 4.61 % w/w for 2-MB and 8-HQ in the nanocontainers, respectively. Furthermore, the release kinetics of the inhibitors from the nanocontainers was studied in corrosive environment using electrochemical impedance spectroscopy (EIS) in the presence of aluminum alloys 2024-T3 (AA2024-T3). This research paper was published in the Journal of Nanoparticle Research, Volume 13, pp 541-554.

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