Formation and Antibacterial Activity of AlOOH/Ag Composite Coating on Macroporous α-Al2O3 Ceramics

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 03 Aug 2022 Russian Federation English Publisher:MDPI AGJournal:Coatings, volume 12, page 1,107 (eissn: 2079-6412,

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Authors: Elena Senkina; Ales Buyakov; Sergey Kazantsev; Olga Bakina; Maksim Krinitsyn; Aleksandr Lozhkomoev;

doi: 10.3390/coatings12081107

Formation and Antibacterial Activity of AlOOH/Ag Composite Coating on Macroporous α-Al2O3 Ceramics

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Abstract

In this study, the modification of macroporous α-Al2O3 ceramics with AlOOH nanostructures impregnated with silver particles is carried out using bicomponent Al/Ag nanoparticles obtained by the simultaneous electrical explosion of Al and Ag wires. Nanoparticle suspension impregnation of porous ceramics followed by oxidation with water is shown to lead to the formation of a continuous AlOOH nanosheet coating on the ceramic surface, with silver releasing on the surface of nanosheets in the form of individual particles sized 5–30 nm. Modified with AlOOH/Ag nanostructures, macroporous α-Al2O3 pellets with a diameter of 11 mm and a thickness of 5 mm show 100% efficiency for water purification from bacteria with a concentration of 105 CFU/mL for 7.5 min at a flow rate of 6.7 mL/min.

Country

Russian Federation

Related Organizations

National Research University of Electronic Technology
Russian Federation
Institute of Strength Physics and Materials Science
Russian Federation

Keywords

бемит, наночастицы, макропористая керамика, модификация, нанолисты, наноструктурированные покрытия, macroporous ceramics; modification; nanoparticles; oxidation; nanosheets; nanostructured coating; boehmite; antimicrobial activity, антимикробная активность, окисление

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