Open AccessPlasma resonance ultraviolet absorption spectroscopy of gold nanorods
Author(s) -
Huiqin Li,
Shaotian Yan,
Longmin Wu,
Shumei Dou,
Xinyue Ren
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/680/1/012097
Subject(s) - nanorod , surface plasmon resonance , colloidal gold , materials science , absorption (acoustics) , absorption spectroscopy , analytical chemistry (journal) , resonance (particle physics) , spectroscopy , plasmon , ultraviolet , nanoparticle , photochemistry , nanotechnology , chemistry , optics , optoelectronics , atomic physics , chromatography , composite material , physics , quantum mechanics
Au nanorods were prepared by seed growth method. Based on the local surface plasmon resonance (SPR) absorption spectra of gold nanoparticles, the formation and growth kinetics of gold nanorods were observed and studied in real time. The effects of temperature and reaction time on the growth process of gold nanorods were emphatically investigated. It was found that the shift of SPR UV-vis absorption peak was closely related to the experimental conditions The influence factors and mechanism of SPR absorption peak shift are discussed. It is concluded that the moving direction of SPR peak is the result of the competition of particle size and charge transfer.