Magnetic-Graphene-Based Nanocomposites and Respective Applications

Abstract

Preparation, properties, and applications of magnetic-graphene-based nanocomposites are reviewed. Graphene magnetic nanocomposites include those on the basis of elemental metals (Fe, Co, Ni), magnetic nanoclusters, various morphological forms of iron oxides (Fe 2 O 3 , Fe 3 O 4), ferrites MFe 2 O 4 , 3D graphene aerogels@hierarchical Fe 3 O 4 nanoclusters, single-molecule magnets like TbPc 2 (Pc: phthalocyanine), other organometallic-containing composites (benzene-metal-graphene), as well as polycomponent nanocomposites such as Ag/Fe 3 O 4 /G (G: graphene), Fe 3 O 4 /CdS/G, or FePc/Fe 3 O 4 /GO (GO: graphene oxide), among others. Their available synthesis methods consist commonly of hydrothermal and solvothermal techniques, sol-gel autocombustion, sonoelectrochemical polymerization, thermal expansion and thermal reduction, microwave-assisted technique, and covalent bonding chemical methods. Their current and potential applications are distinct devices, in particular for colorimetric detection of glucose, construction materials, analytical, sensor and biosensor applications, environmental remediation, compounds with antibacterial properties, catalysis and photocatalysis, biological imaging, oil absorption, etc.

Modification of the Properties of Polymer Composites in a Constant Magnetic Field Environment

“…Its structure became more porous in a magnetic field than in its absence. The layers obtained without a magnetic field have an activation character of conductivity, whereas the thin layers formed in the magnetic field have metallic conductivity [ 5 , 6 , 7 , 8 , 9 ].…”

Alignment of polymer based magnetic composites in magnetic field

“…Composites based on nanoparticles made from magnetic metals are promising for various potential applications such as spin-polarized devices, carriers for drug delivery, magnetic recording media, high-frequency applications, magneto-optical storage, interference suppression, biomedical sensing, etc. [10,11]. Magnetite, Fe 3 O 4 , is an attractive material for anodes in manifold electronic devices and spintronics due to its high theoretical capacity, high density, low cost, low toxicity, and outstanding magnetic properties [12].…”

Graphene Oxide Reinforced Magnetic FeCoNiCuZn High Entropy Alloy through Electrodeposition

“…Graphene-based metal composites have been versatile candidates for several advanced applications in nanotechnology owing to the unique properties of graphene in the composite. 1 With increasing demands, the progress in graphene-based metal composites has taken place in magnetic materials as well. [1][2][3] Because of the presence of σ and π bonds and excellent carrier mobility, graphene can generate localized spins and as a result, graphene-based magnetic materials could prove to be potential candidates for electromagnetic wave absorbers, 4 spintronics, 5 catalysis, 6 sensors, 7,8 MRI and so on.…”

“…1 With increasing demands, the progress in graphene-based metal composites has taken place in magnetic materials as well. [1][2][3] Because of the presence of σ and π bonds and excellent carrier mobility, graphene can generate localized spins and as a result, graphene-based magnetic materials could prove to be potential candidates for electromagnetic wave absorbers, 4 spintronics, 5 catalysis, 6 sensors, 7,8 MRI and so on. 9 On the other hand, as the demand for the development of new alloys increases, HEAs have recently attracted a lot of attention due to their exceptional properties.…”