Simple synthesis of graphene nanocomposites MgO–rGO and Fe2O3–rGO for multifunctional applications
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Hummer’s method was used to prepare graphene oxide (GO) by chemical exfoliation of graphite. Simple precipitation method was used for the preparation of hybrid nanocomposites MgO–rGO and Fe2O3–rGO. A 0.3 Molar of corresponding metal nitrate solution and GO solution are used for the preparation process. XRD, FT-IR, and XPS were used to characterize the prepared nanocomposites. The reduction of GO into reduced rGO in the formed nanocomposites was confirmed. Morphological characterization showed the formation of needle-shaped nanocrystals of MgO successfully grown on graphene nanosheet with average crystallite size 8.4 nm. Hematite nanocomposite Fe2O3–rGO forms rod-shaped crystals with average crystallite size 27.5 nm. The saturation magnetization observed for Fe2O3–rGO is less than reported value for the pure Fe2O3 nanoparticles. Thermal properties of as-prepared hybrid nanocomposites MgO–rGO and Fe2O3–rGO showed thermal stability of the prepared nanocomposite over long range of temperature.
The authors are grateful to the center of Science and Technology, NAM, Center of Science and technology for non-aligned and other developing countries, New Delhi, India, for the fellowship (RTF-DCS-2016) research training fellowship for developing countries scientists provided for the first author S. K. A. This work is supported by NAM center New Delhi, and Interdisciplinary Nanotechnology Centre, Aligarh Muslim University (AMU), Aligarh 202002, India. The authors thank Dr. Imran, AMU for revising the English language of the manuscript.
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