Structural and optical properties of Fe3O4@Au/rGO nanocomposites synthesized by hydrothermal method and their photothermal effect under NIR laser irradiation

One of the most promising methods of heat generation is using the nanosources, as absorbent light, under near-infrared (NIR) irradiation. Here, the Fe3O4@Au/rGO nanocomposites (NCs) with various graphene content (10, 25, and 40 wt%) synthesized by hydrothermal reaction method. The heat generated by...

Full description

Saved in:
Bibliographic Details
Published in:Materials chemistry and physics 2021-01, Vol.258, p.123956, Article 123956
Main Authors: Shakerian Ardakani, Tahereh, Meidanchi, Alireza, Shokri, Aliasghar, Shakeri-Zadeh, Ali
Format: Article
Language:English
Subjects:
Chemical synthesis
Diameters
Fe3O4@Au/rGO
Gold
Graphene
Heat generation
Hydrothermal reactions
Hydrothermal synthesis
Ions
Iron oxides
Irradiation
Lasers
Medical imaging
Nanocomposites
Near infrared laser irradiation
Near infrared radiation
NIR
Optical properties
Physical properties
X ray photoelectron spectroscopy
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:One of the most promising methods of heat generation is using the nanosources, as absorbent light, under near-infrared (NIR) irradiation. Here, the Fe3O4@Au/rGO nanocomposites (NCs) with various graphene content (10, 25, and 40 wt%) synthesized by hydrothermal reaction method. The heat generated by Fe3O4@Au/rGO NCs suspensions under NIR laser irradiation (808 nm) in various concentration and times has been experimentally determined. The physical characteristics of these nanocomposite were studied using FE-SEM, TEM, XRD, XPS, FTIR, UV–vis, and Raman techniques. TEM and FE-SEM images displayed the spherical shape of Fe3O4@Au NCs which had varying diameter from 20 to 30 nm, coated to rGO sheets (with ~1 μm lateral dimension). The results demonstrate that the temperature of suspension under NIR laser irradiation raises from 5 to 40 °C with the increase of both the graphene contents and concentration. The Fe3O4@Au/rGO NCs are proposed as promising nanosources for heat generation under NIR laser irradiation and are useful for photothermal therapy, biomedical imaging, photothermal imaging, catalysis, and sensors applications. •Fe3O4@Au/rGO NCs by hydrothermal reaction method were synthesized.•The physical characteristics of these nanocomposite were studied.•Heat generation of Fe3O4@Au/rGO NCs under NIR laser irradiation were evaluated.•As novel heat sources under NIR laser irradiation, Fe3O4@Au/rGO NCs suggested.
ISSN:0254-0584
1879-3312
DOI:10.1016/j.matchemphys.2020.123956