Preparation and Superparamagnetic Properties of Graphene/Fe₃O₄ Nanocomposite

Abstract:

The superparamagnetic graphene/Fe₃O₄ nanocomposite has been successfully prepared via an easy and scalable chemical precipitation method. High quality graphene sheets were prepared from natural flake graphite by oxidation, rapid expansion and ultrasonic treatment. The structure of graphene and graphene/Fe₃O₄ nanocomposite was investigated by transmission electron microscopy, Xray diffraction and Fourier transform infrared spectroscopy. The graphene sheets possess a curled morphology consisting of a thin wrinkled paper-like structure. The graphene/Fe₃O₄ nanocomposite exhibits a superparamagnetic behavior, its specific saturation magnetization, Ms is 38.92 emu g^-1.

• Periodical: Applied Mechanics and Materials (Volume 320)
• Pages: 518-521
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.320.518
• Online since: May 2013
• Authors: Dong Lin Zhao, Li Zhong Bai, Xiao Li, Dong Dong Zhang
• Keywords: Graphene (GR), Graphene/Fe₃O₄, Nanocomposite, Superparamagnetic

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