Preparation and Characterization of Silica-Enoxil Nanobiocomposites
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KUZEMA, Pavlo, LAGUTA, Iryna, STAVINSKAYA, Oksana, KAZAKOVA, Olga, BORYSENKO, Mykola, LUPASCU, Tudor. Preparation and Characterization of Silica-Enoxil Nanobiocomposites. In: Nanoscale Research Letters, 2016, vol. 11, pp. 1-7. ISSN 1931-7573. DOI:
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Nanoscale Research Letters
Volumul 11 / 2016 / ISSN 1931-7573

Preparation and Characterization of Silica-Enoxil Nanobiocomposites


Pag. 1-7

Kuzema Pavlo1, Laguta Iryna1, Stavinskaya Oksana1, Kazakova Olga1, Borysenko Mykola1, Lupascu Tudor2
1 Chuiko Institute of Surface Chemistry, National Academy of Science of Ukraine,
2 Institute of Chemistry of the Academy of Sciences of Moldova
Disponibil în IBN: 3 noiembrie 2017


Silica-Enoxil nanobiocomposites with 13 %w of Enoxil were prepared either by mechanical mixing of corresponding powders or by sorptive modification of fumed silica powder with aqueous Enoxil solution under fluidized bed conditions. The interaction of fumed silica with Enoxil and the properties of silica-Enoxil composites have been investigated using IR spectroscopy, thermogravimetric analysis, and quantum chemistry methods, as well as by means of water absorption, Enoxil desorption, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) test. It has been shown that the main biomolecules of Enoxil composition interact with silica involving their hydroxyl groups and surface silanol groups. The water absorption of silica-Enoxil nanocomposites was found to be less than that for the individual components. The Enoxil biomolecules are readily and completely desorbed from silica surface into water, and the antioxidant activity of desorbed Enoxil is practically the same as that for the just dissolved one.

adsorption, antioxidant, composite, desorption, Enoxil, Fumed silica,


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