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Facile synthesis of sheet-like Fe/C nanocomposites by a combustion-based method

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Abstract Sheet-like Fe/C nanocomposites have been successfully synthesized by a facile combustion-based method with two simple steps. First, a sheet-like precursor consisting of evenly mixed amorphous iron oxide and carbon… Click to show full abstract

Abstract Sheet-like Fe/C nanocomposites have been successfully synthesized by a facile combustion-based method with two simple steps. First, a sheet-like precursor consisting of evenly mixed amorphous iron oxide and carbon was prepared through solution combustion synthesis by using ferric nitrate as an iron source and an oxidizer, glycine as a fuel and glucose as a carbon source. Subsequently, sheet-like Fe/C nanocomposites were synthesized via hydrogen reduction of the as-prepared precursor at 400 °C. The obtained Fe/C nanocomposites are composed of iron nanoparticles and amorphous carbon and the iron nanoparticles are homogenously embedded into the sheet-like carbon support. With the reduction time increasing from 2 h to 4 h, the saturation magnetization of the Fe/C nanocomposites reduced at 400 °C increases from 145.7 emu/g to 188.4 emu/g, whereas the coercivity decreases from 428.1 Oe to 90.4 Oe. The Fe/C nanocomposites reduced at 400 °C for 2 h have homogenous nanocomposite structure, well-dispersed iron nanoparticles with the size of ∼20 nm and high specific surface area of 274.9 m 2 /g, which make this low-cost material a highly promising candidate for potential applications in water treatment, environmental remediation, absorption and catalysis.

Keywords: like nanocomposites; combustion based; based method; sheet like; iron

Journal Title: Journal of Alloys and Compounds
Year Published: 2017

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