Open AccessFacile method to functionalize graphene oxide with variable load of magnetite nanoparticles
Author(s) -
Iván Gómez,
Rafael Cabanzo,
Enrique Mejía-Ospino
Publication year - 2019
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 - 10.1088/1742-6596/1247/1/012037
Subject(s) - graphene , oxide , materials science , magnetite , raman spectroscopy , x ray photoelectron spectroscopy , nanoparticle , chemical engineering , surface modification , iron oxide , transmission electron microscopy , iron oxide nanoparticles , nanotechnology , scanning electron microscope , composite material , metallurgy , physics , engineering , optics
A facile route for the functionalization in situ of graphene oxide with magnetite nanoparticles (Fe 3 O 4 @GO) was developed. We used graphene oxide with different oxidation time (12 and 24 hours) and each one was functionalized with different proportions of Fe 3 O 4 nanoparticles modifying the load of the iron precursor (FeSO 4 .7H 2 O). The as-synthesized materials were characterized by multiple spectroscopic techniques (FT-IR, Raman, DRX, XPS) to demonstrate the successful attachment of iron oxide nanoparticle on graphene oxide sheets. Transmission electron microscopy (TEM) revealed that magnetite NPs were firmly decorated on the surfaces of graphene oxides with the mean diameter of about 7 nm. The magnetometry studies showed ferromagnetic behaviour of all composites in the range of 44-66 emu/g at room temperature.