SURFACE PLASMON RESONANCE OF GOLD/SILVER CORE/SHELL NANOROD WITH DIFFERENT THICKNESS OF SILVER SHELL
DOI:
https://doi.org/10.51453/2354-1431/2021/455Keywords:
Gold nanorods, silver NPs, surface plasmons, core /shell structure, AuR/Ag.Abstract
This article shows the fabrication of AuR/Ag core/shell structural nanoparticles with the core of gold nanorods, the shells of silver nanoparticles according to the reduced method. This work involves two independent processes including the synthesis and optical properties survey of gold nanorods, then using the gold nanorods as the core particles for the next stage to form the core/shell structure AuR/Ag. Using UV-VIS absorption spectra to study the optical properties of the AuR/Ag core/shell structures and at the same time investigate the effect of the Ag+ concentration on the formation and optical properties of the AuR / Ag complex. The results showed that the optical properties of AuR / Ag strongly depend on the amount of the shell-forming precursor Ag+ ion. The greater the amount of Ag+, the thicker the silver crust, the plasmon resonance peaks of the fluid towards the shortwave, and the kinetic moment, the resonance peak at 353 nm with the contribution of electrons of the silver oscillating in the horizontal direction of the AuRs.
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