title: An ultrasonic technology for production of antibacterial nanomaterials and their coating on textiles.
abstract: A method for the production of antibacterial ZnO nanoparticles has been developed. The technique combines passing an electric current with simultaneous application of ultrasonic waves. By using high-power ultrasound a cavitation zone is created between two zinc electrodes. This leads to the possibility to create a spatial electrical discharge in water. Creation of such discharge leads to the depletion of the electrodes and the formation of ZnO nanoparticles, which demonstrate antibacterial properties. At the end of this reaction the suspension of ZnO nanoparticles is transported to a specially developed ultrasonic reactor, in which the nanoparticles are deposited on the textile. The nanoparticles are embedded into the fibres by the cavitation jets, which are formed by asymmetrically collapsing bubbles in the presence of a solid surface and are directed towards the surface of textile at very high velocities. Fabrics coated with ZnO nanoparticles by using the developed method showed good antibacterial activity against E. coli.
authors.affiliation: Institute of general and inorganic chemistry of the Russian Academy of Sciences, Leninskiy prospect 31, Moscow, 119991, Russian Federation.
authors.forename: Anna V
authors.initials: AV
authors.lastname: Abramova
authors.affiliation: Institute of general and inorganic chemistry of the Russian Academy of Sciences, Leninskiy prospect 31, Moscow, 119991, Russian Federation.
authors.forename: Vladimir O
authors.initials: VO
authors.lastname: Abramov
authors.affiliation: Department of Chemistry, Bar Ilan University, Ramat-Gan, 52900, Israel.
authors.forename: Aharon
authors.initials: A
authors.lastname: Gedanken
authors.affiliation: Department of Chemistry, Bar Ilan University, Ramat-Gan, 52900, Israel.
authors.forename: Ilana
authors.initials: I
authors.lastname: Perelshtein
authors.affiliation: Institute of general and inorganic chemistry of the Russian Academy of Sciences, Leninskiy prospect 31, Moscow, 119991, Russian Federation.
authors.forename: Vadim M
authors.initials: VM
authors.lastname: Bayazitov
keywords: antibacterial textile; cavitation; electrical discharge in liquid; nanoparticle; ultrasound