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Effect of Bacterial Cellulose Plasma Treatment on the Biological Activity of Ag Nanoparticles Deposited Using Magnetron Depositionстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Vasil’kov Alexander, Budnikov Alexander, Gromovykh Tatiana, Pigaleva Marina, Sadykova Vera, Arkharova Natalia, Naumkin Alexander
- Журнал: Polymers
- Том: 14
- Год издания: 2022
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Первая страница: 1
- Последняя страница: 15
- Номер статьи: 3907
- DOI: 10.3390/polym14183907
- Аннотация: New functional medical materials with antibacterial activity based on biocompatiblebacterial cellulose (BC) and Ag nanoparticles (Ag NPs) were obtained. Bacterial cellulose films wereprepared by stationary liquid-phase cultivation of the Gluconacetobacter hansenii strain GH-1/2008in Hestrin–Schramm medium with glucose as a carbon source. To functionalize the surface andimmobilize Ag NPs deposited by magnetron sputtering, BC films were treated with low-pressureoxygen–nitrogen plasma. The composition and structure of the nanomaterials were studied usingtransmission (TEM) and scanning (SEM) electron microscopy and X-ray photoelectron spectroscopy(XPS). Using electron microscopy, it was shown that on the surface of the fibrils that make up thenetwork of bacterial cellulose, Ag particles are stabilized in the form of aggregates 5–35 nm in size.The XPS C 1s spectra show that after the deposition of Ag NPs, the relative intensities of the C-OHand O-C-O bonds are significantly reduced. This may indicate the destruction of BC oxypyran ringsand the oxidation of alcohol groups. In the Ag 3d5/2 spectrum, two states at 368.4 and 369.7 eVwith relative intensities of 0.86 and 0.14 are distinguished, which are assigned to Ag0 state and Agacetate, respectively. Nanocomposites based on plasma-treated BC and Ag nanoparticles depositedby magnetron sputtering (BCP-Ag) exhibited antimicrobial activity against Aspergillus niger, S. aureusand Bacillus subtilis.
- Добавил в систему: Васильков Александр Юрьевич
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