| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:03 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2017 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Design and synthesis of colloidal solution of silver nanoparticles by controlled electrolysis method
Authors:
Theodor AXENIE (1), Sanda VOINEA(2), Faisal AL-BEHADILI(2), Marcela Elisabeta BARBINTA PATRASCU(4), Cornelia NICHITA (3,5)
*
Affiliation:
1)Department of Physics, Columbia University, 538 West 120th Street, 704 Pupin Hall, MC 5255, New York, NY, USA
2)University of Bucharest, Faculty of Physics, MG-11, 405 Atomistilor Street, Bucharest-Magurele, Romania,
3)University of Bucharest, Faculty of Physics,3Nanosae Research Center, MG-38, 405 Atomistilor Street, Bucharest-Magurele, Romania
4)University of Bucharest, Faculty of Physics, Department of Electricity and Magnetism, Solid-State Physics and Biophysics, MG-11, 405 Atomistilor Street, Bucharest-Magurele, Romania
5)National Institute for Chemical – Pharmaceutical Research and Development, 112 Vitan Avenue, 031299, Bucharest, Romania
E-mail
cornelianichita@yahoo.com; cornelia@3nanosae.org
Keywords:
colloidal silver, silver nanoparticles, electrolysis
Abstract:
Silver nanoparticles (AgNPs) exhibit unique optical properties, high thermal and electrical conductivity, as well as antibacterial properties. Thus, they have become increasingly used in many fields ranging from optoelectronics to medicine. Some of the most important applications of AgNPs include the production of biosensors, and the use as an antibacterial agent and drug delivery system. The method of electrolysis used was designed because of the reduced synthesis time it requires. To obtain the AgNPs, silver electrodes with a purity of 99.99% inserted in Type 1 ultrapure water have been used to produce a silver ion solution which was reduced to form nanoparticles. The operational parameters of the electrolysis process such as time, current intensity, etc. have been carefully controlled in order to produce nanoparticles of several concentrations. The properties of the colloidal solution were analyzed through various techniques: the presence and formation of AgNPs by UV-vis spectrometry, the particle size and zeta potential by dynamic light scattering (DLS).
Acknowledgement:
This work was supported by the Romanian National Authority for Scientific Research, Project PN16270303.
|
|
|
|