Preparation of Chitosan–Graphite-Like Carbon-Nitride Biocoatings on AZ91 Magnesium Alloy

A. A. Kasach; Касач А. А.; A. V. Pospelov; Поспелов А. В.; M. A. Osipenko; Осипенко М. А.; G I. Lazorenko; Лазоренко Г. И.; E. Bogdan; Богдан Е. О.; A. S. Kasprzhitskii; Каспржицкий А. С.; N. E. Kolchanova; Колчанова Н. Э.; I. I. Kurilo; Курило И. И.

doi:10.31857/S0044185622100047

Preparation of Chitosan–Graphite-Like Carbon-Nitride Biocoatings on AZ91 Magnesium Alloy

Autores: Kasach A.A.¹, Pospelov A.V.², Osipenko M.A.³, Lazorenko GI.⁴, Bogdan E.³, Kasprzhitskii A.S.⁴, Kolchanova N.E.⁵, Kurilo I.I.³
Afiliações:
1. Department of Chemistry and Technology of Electrochemical Production and Electronic Engineering Materials, Belorussian State Technological University, 220006, Minsk, Belarus
2. Center of Physicochemical Research Methods, Belorussian State Technological University, 220006, Minsk, Belarus
3. Department of Physical, Colloidal, and Analytical Chemistry, Belorussian State Technological University, 220006, Minsk, Belarus
4. Rostov State Transport University, 344038, Rostov-on-Don, Russia
5. Department of Microbiology, Virology and Immunology, Gomel State Medical University, Gomel, Belarus
Edição: Volume 59, Nº 1 (2023)
Páginas: 54-63
Seção: НАНОРАЗМЕРНЫЕ И НАНОСТРУКТУРИРОВАННЫЕ МАТЕРИАЛЫ И ПОКРЫТИЯ
URL: https://ogarev-online.ru/0044-1856/article/view/139708
DOI: https://doi.org/10.31857/S0044185622100047
EDN: https://elibrary.ru/BWAMOB
ID: 139708

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Resumo

In the present study, chitosan coatings modified with g-C3N4 were prepared for AZ91 magnesium alloy. The microstructure of the chitosan–g-C3N4 coatings, depending on the concentration of the particles of the modifying phase in the chitosan solution, was investigated by scanning electron microscopy and X-ray phase analysis. It was found that coatings prepared in suspension of chitosan containing more than 30 g/dm3 g-C3N4 exhibited a complete wettability with a sodium-phosphate buffer solution. Confocal microscopy established the degree of inhibition of E. coli biofilm formation on the surface of the prepared coatings. It was found by using linear voltammetry and electrochemical impedance spectroscopy that the modification of chitosan by the g-C3N4 particles led to an improvement in the protective properties of coatings.

Palavras-chave

chitosan, magnesium alloy, corrosion, biodegradation, graphite-like carbon nitride, antibacterial properties

Bibliografia

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