Open AccessSynthesis of gold nanoparticles by the spark discharge method for visible plasmonics
Author(s) -
V. I. Borisov,
А. А. Лизунова,
Dana Malo,
Ekaterina Kameneva,
A. A. Ramanenka,
В. В. Иванов
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2086/1/012002
Subject(s) - nanoparticle , materials science , agglomerate , transmission electron microscopy , surface plasmon resonance , plasmon , colloidal gold , spark plasma sintering , absorption (acoustics) , visible spectrum , absorption spectroscopy , analytical chemistry (journal) , scanning electron microscope , nanotechnology , sintering , optoelectronics , optics , composite material , chemistry , organic chemistry , physics
This work demonstrates synthesis of metal Au nanoparticles with a plasmon resonance in the visible optical region by the spark discharge method in atmosphere of argon of purity 6.0. With raising of sintering temperature from 25 to 950 °C, the morphology of synthesized Au nanoparticles changed from agglomerates to individual particles with decreasing the median size from 270 to 90 nm according to aerosol spectrometer. While by transmission electron microscopy primary nanoparticles with a gold crystalline structure with sizes in range from 5 to 120 nm were observed. Synthesized nanoparticles ensembles had broad absorption peaks with maximum in the visible optical region with peak positions approximately at 490 nm. High temperature sintered particles had a spherical shape and an additional absorption peak at approximately 640 nm.