One-pot solvothermal syntheses and magnetic properties of graphene-based magnetic nanocomposites

✍ Scribed by Xiaoping Shen; Jili Wu; Song Bai; Hu Zhou

• Book ID: 116607143
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 471 KB
• Volume: 506
• Category: Article
• ISSN: 0925-8388
• DOI: 10.1016/j.jallcom.2010.06.158

✦ Synopsis

In this study, graphene-based magnetic nanocomposites (graphene/Fe 3 O 4 and graphene oxide/Fe 3 O 4 ) have been prepared via a facile and effective one-pot solvothermal method. X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR) spectroscopy and ultraviolet-visible (UV-vis) spectroscopy were used to demonstrate the successful attachment of Fe 3 O 4 nanoparticles to graphene and graphene oxide sheets. It is shown that the Fe 3 O 4 nanoparticles with a size of ca. 60 nm were well spread out on the graphene and graphene oxide sheets, respectively. The thermal stability of the nanocomposites was investigated by thermogravimetry (TG) and differential scanning calorimetry (DSC) analyses. Magnetic studies reveal a superparamagnetic behavior of the graphene/Fe 3 O 4 nanocomposites, which make it promising for practical applications in future bio-nanotechnology.