Seeded growth synthesis, reshaping, and damping of the localized surface plasmon resonance in Au@Fe2O3 nanoparticles

被引：1
|
作者：
Ortega-Guzman, J. E. [1 ,2 ]
Reyes, C. [2 ]
Leon, J. A. [2 ]
Tavizon, G. [3 ]
Arenas, J. A. [2 ]
机构：
[1] Univ Nacl Autonoma Mexico, Programa Maestria & Doctorado Ciencias Quim, Mexico City 04510, DF, Mexico
[2] Univ Nacl Autonoma Mexico, CISAN, Mexico City, Mexico
[3] Univ Nacl Autonoma Mexico, Fac Quim, Mexico City 04510, Mexico
来源：
MATERIALS LETTERS | 2024年 / 357卷
关键词：
Nanoparticles; Crystal structure; Electron microscopy; Spectroscopy; NANORODS;
D O I：
10.1016/j.matlet.2023.135709
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Core@shell Au@Fe2O3 nanoparticles with different iron oxide content were synthesized by a seeded-growth approach. The morphology and structural analysis were carried out by transmission electron microscopy (TEM and HR-TEM) and X-ray diffraction (XRD). The oxidation state of the iron was determined through cyclic voltammetry measurements. The plasmonic resonance modes were investigated by Infrared (IR) and UV-vis spectroscopy. The morphology analysis of Au nanowires (AuNW's) shows a modification from NW's (seeds) to faceted nanoparticles, while spectroscopic studies show a disappearance of the Propagation Surface Plasmon Resonance (PSPR) due to this change. Localized Surface Plasmon Resonance (LSPR) is damped due to the aggregation of the iron oxide layer.
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页数：5
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