One-step solvothermal synthesis of an iron oxide–graphene magnetic hybrid material with high porosity

A graphene-based magnetic hybrid porous material was fabricated through a one-step solvothermal approach using graphene oxide and iron precursors, in which the reduction of the graphene oxide and the formation of the magnetic iron oxide nanoparticles proceeded simultaneously. Owing to the driving force of the chemisorption interaction, the graphene sheets and magnetic nanoparticles assembled into three-dimensional structures. The materials exhibit superparamagnetism (saturation magnetization: 0.1–20.3 emu g−1), and were characterized by X-ray diffraction, thermal gravimetric analysis, transmission electron microscopy, infrared spectra and Raman spectroscopy. Gas sorption analysis shows the as-prepared hybrid material has high porosity (BET specific surface area: 418–901 m2 g−1), and the hydrogen uptake value ranges from 0.88 to 1.44 wt.%.

Graphene-based magnetic hybrid porous material with enhanced porosity was fabricated through a one-step solvothermal approach, in which the reduction of graphene oxide and the formation of magnetic nanoparticles proceed simultaneously. Owing to the driving force of chemisorption interaction, the in situ obtained graphene sheets and magnetic nanoparticles assembled together into three-dimensional architectures.Figure optionsDownload as PowerPoint slideHighlights
► One-step method to fabricate graphene-based magnetic hybrid porous material (GMNP) was developed.
► The gas sorption ability and magnetic property of the GMNP materials were investigated.
► The GMNP materials possess high porosity and tunable magnetic property.
► The hydrogen uptake value of the GMNP is mainly depending on the specific surface area and the content of the magnetic nanoparticles.