SILVER NANOPARTICLES STABILIZED BY CARBONATE IONS AS ANTIBACTERIAL MATERIAL

1 ERSHOV Vadim
Co-authors:
1 SAFONOV Alexey 1 ABKHALIMOV Evgeniy 1 ERSHOV Boris
Institution:
1 A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninsky pr. 31-4, Moscow, 119071, Russia, E-mail: vadersh@yandex.ru
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
639-643
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
12 views / 7 downloads
Abstract

The «pure» colloidal solution of silver (hydrosol) preparation method was developed. This hydrosol contains only silver NPs of the average size (20-25 nm) and stabilizing carbonate ions. Preparation method consists in the photo-chemical reduction of silver ions by oxalate-ions, which generate stabilizing carbonate ions. The hydrosol was studied by methods of physicochemical analysis (spectrophotometry, dynamic light scattering, and transmission electron microscopy, scanning electron microscopy). The hydrosol is aggregative stable for several weeks in water. The Bacteria Escherichia coli (gram-negative, family Enterobacteriaceae) is chosen as biological object to study the bactericidial properties NPs It has been found that silver NPs suppress the development of microflora. However, the antimicrobial effect is lower in comparison with silver in ionic form.

Keywords: Silver nanoparticles, antibacterial material, carbonate ions, «pure» hydrosol, Escherichia coli
Scroll to Top