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2190-4286-5-62.pdf

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An ultrasonic technology for production of anti- bacterial nanomaterials and their coating on textiles

Anna V. Abramova*1, Vladimir O. Abramov1, Aharon Gedanken2, Ilana Perelshtein2 and Vadim M. Bayazitov1

Full Research Paper

Address:

1Institute of general and inorganic chemistry of the Russian Academy of Sciences, Leninskiy prospect 31, Moscow, 119991, Russian Federation and 2Department of Chemistry, Bar Ilan University, Ramat-Gan, 52900, Israel

Email:

Anna V. Abramova* - anna_v_abramova@mail.ru

* Corresponding author

Keywords:

antibacterial textile; cavitation; electrical discharge in liquid; nanoparticle; ultrasound

Open Access

Beilstein J. Nanotechnol. 2014, 5, 532–536. doi:10.3762/bjnano.5.62

Received: 02 December 2013 Accepted: 14 March 2014 Published: 28 April 2014

This article is part of the Thematic Series "Physics, chemistry and biology of functional nanostructures II".

Guest Editor: A. S. Sidorenko

© 2014 Abramova et al; licensee Beilstein-Institut. License and terms: see end of document.

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 asymmetri- cally 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.

Introduction

Currently, the problem of nosocomial (acquired in hospitals) infections becomes more and more urgent. About 5–10% of all patients in hospitals are affected by them. Hospital-acquired infections are one of the ten most frequent causes of death. The economic loss caused by nosocomial infections is significant. In the Russian Federation it may reach 10–15 billion RUB per year (conservative estimation). For comparison, the annual economic impact of nosocomial infections in Europe is around 7 billion

EUR and in the US about 6.5 billion USD. Hospital-acquired infections significantly reduce the life quality of the patients of life and lead to a loss of reputation for the hospital [1]. In order to reduce the hospital acquired infections, the staff sterilizes surfaces, employs hygiene measures and minimizes contacts between patients. However, reusable textiles such as the patients linen or the doctor robes remain a significant source of infection. To ameliorate the problem one could replace reusable

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