Spectral-Kinetic Analysis of State of Silver Sol Particles During Synthesis in Various Media

Abstract: Silver nanoparticles (Ag NPs) have been synthesized in various media using chemical reduction of silver ions with tannin and absorption spectra have been recorded during synthesis of organosol, organohydrosol, and hydrosol. Analysis of the spectra has provided the concentration of Ne conduction electrons, volume fraction of particles NV, and damping coefficient of plasma oscillations γ, which characterizes the imperfection of particle surface. It has been determined that there is an increase in NV and a decrease in γ during formation of Ag NPs of hydrosol and organohydrosol. Parameters NV and γ, which vary upon synthesis of Ag sols, possess a period with self-excited oscillations. Explanations of the nonstationary character of Ag NP formation in sols and a formal second kinetic order of the process in nonaqueous medium have been suggested. © 2020, Pleiades Publishing, Ltd.

Publisher
Maik Nauka Publishing / Springer SBM
Number of issue
2
Language
English
Pages
277-281
Status
Published
Volume
56
Year
2020
Organizations
  • 1 Peoples’ Friendship University of Russia, Moscow, 117198, Russian Federation
Keywords
analysis of absorption spectra; silver nanoparticles; surface defects
Date of creation
02.11.2020
Date of change
02.11.2020
Short link
https://repository.rudn.ru/en/records/article/record/64915/