Considerable Variation of Antibacterial Activity of Cu Nanoparticles Suspensions Depending on the Storage Time, Dispersive Medium, and Particle Sizes

Olga V. Zakharova, Anna Yu Godymchuk, Alexander A. Gusev, Svyatoslav I. Gulchenko, Inna A. Vasyukova, Denis V. Kuznetsov

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Suspensions of Cu nanoparticles are promising for creating the new class of alternative antimicrobial products. In this study we examined copper nanoparticles of various sizes obtained by the method of wire electric explosion: nanopowder average size 50 nm (Cu 50) and 100 nm (Cu 100). The paper presents the complex study of the influence of physicochemical properties such as particle size and concentration of the freshly prepared and 24-hour suspensions of Cu nanoparticles in distilled water and physiological solution upon their toxicity to bacteria E. coli M-17. Ionic solution of Cu2+ and sodium dichloroisocyanurate was used for comparison study. It has been shown that decrease in the nanoparticle size leads to changes in the correlation between toxicity and concentration as toxicity peaks are observed at low concentrations (0.00010.01 mg/L). It has been observed that antibacterial properties of Cu 50 nanoparticle suspensions are ceased after 24-hour storage, while for Cu 100 suspensions no correlation between antibacterial properties and storage time has been noted. Cu 100 nanoparticle suspensions at 10 mg/L concentration display higher toxicity at substituting physiological solution for water than Cu 50 suspensions. Dependence of the toxicity on the mean particle aggregates size in suspension was not revealed.

Original languageEnglish
Article number412530
JournalBioMed Research International
Volume2015
DOIs
Publication statusPublished - 2015

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Particle Size
Nanoparticles
Suspensions
Particle size
Toxicity
Electric wire
Explosions
Water
Escherichia coli
Copper
Bacteria

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)

Cite this

Considerable Variation of Antibacterial Activity of Cu Nanoparticles Suspensions Depending on the Storage Time, Dispersive Medium, and Particle Sizes. / Zakharova, Olga V.; Godymchuk, Anna Yu; Gusev, Alexander A.; Gulchenko, Svyatoslav I.; Vasyukova, Inna A.; Kuznetsov, Denis V.

In: BioMed Research International, Vol. 2015, 412530, 2015.

Research output: Contribution to journalArticle

Zakharova, Olga V. ; Godymchuk, Anna Yu ; Gusev, Alexander A. ; Gulchenko, Svyatoslav I. ; Vasyukova, Inna A. ; Kuznetsov, Denis V. / Considerable Variation of Antibacterial Activity of Cu Nanoparticles Suspensions Depending on the Storage Time, Dispersive Medium, and Particle Sizes. In: BioMed Research International. 2015 ; Vol. 2015.
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