N.C.S.R. "Demokritos"


Department of Materials Science

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Synthesis, Characterization and Antibacterial action of Ceramic Nanocontainers and their Inhibitor Complexes

Ceramic nanocontainers are synthesized through a two-step process and then loaded with corrosion inhibitors. First, polystyrene nanospheres (PS) are produced using emulsion polymerization or polymerisation in suspension. Second, the PS spheres are coated via the sol-gel method to form a ceramic layer. Finally, the nanocontainers are made by calcination of ceramic coated PS nanospheres. The size of the containers is 100 ± 10 nm as determined by Scanning Electron Microscopy and Transmission Electron Microscopy. The products are characterized by Energy Dispersive X-Ray Analysis, FT-infrared spectroscopy (FT-IR), X-ray diffraction, Thermogravimetric Analysis (TGA), Differential Thermal Analysis and BET. The loading of the inhibitors in the nanocontainers is estimated with TGA and FT-IR. The loading amount of inhibitors is ranged between 5.22% w/w and 16.43% w/w due to different porosity of nanocontainers. Furthermore, release of inhibitors in corrosive environment is studied by Vis-Ultraviolet spectroscopy and by Potentiodynamic measurements. Moreover, antibacterial action of illuminated nanocontainers loaded or not on pure culture of Escherichia coli (E-coli) is studied.

Department of Materials Science, N.C.S.R. "Demokritos", 153 10 Aghia Paraskevi, Attiki, phone: +30 210 6503381, fax: +30 210 6519430
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