Dynamic processes during the light-induced synthesis of silver nanoparticles

A. Korop; Y. Khalavka

doi:10.1117/12.3016087

5 January 2024 Dynamic processes during the light-induced synthesis of silver nanoparticles

A. Korop, Y. Khalavka

Proceedings Volume 12938, Sixteenth International Conference on Correlation Optics; 129382I (2024) https://doi.org/10.1117/12.3016087
Event: International Conference Correlation Optics (COR 2023), 2023, Chernivtsi, Ukraine

Abstract

In this study, we investigate changes in the surface plasmon resonance for silver nanoparticles during the light-induced synthesis. An unusual effect is observed during the dilution of light-irradiated samples of decahedral and prismatic nanoparticles. Continuous monitoring of extinction spectra during the synthesis shows that there is a slow movement of the extinction maximum to the short-wave region and stabilizes in 15 minutes. During the continuation of light irradiation, the peak again moves to the right. This can be a demonstration that during irradiation, Ag⁺ ions are sorbed on the surface, and upon dilution, ions are desorbed from the surface. We attribute this effect to the changes in charge distribution that lead to the decrease of the plasmon resonance frequency. The process is confirmed both for decahedra and prisms. The dynamism of this process is confirmed by the absence of the effect of dissolution on the formation of nanoseeds, as well as the growth of nanoparticles. Also, there is a simple relationship between the wavelength shift to the injected electron density for gold nanorods1 . Our goal is to figure out how the conduction electron density changes in case of observed shift for silver decahedra and prisms.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

A. Korop and Y. Khalavka "Dynamic processes during the light-induced synthesis of silver nanoparticles", Proc. SPIE 12938, Sixteenth International Conference on Correlation Optics, 129382I (5 January 2024); https://doi.org/10.1117/12.3016087

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