Abstract
The graphite encapsulated α-Fe particles were prepared by reduction of stage-2 and stage-3 FeCl3 graphite intercalation compounds (GICs) with metallic potassium. X-ray diffraction analysis (XRD), energy dispersive X-ray spectroscopy (EDS) investigation and transmission electron microscopy (TEM) observation show that the reduction products of stage-2 FeCl3-GICs contains more abundant α-Fe nanoparticles than those of stage-3. High-resolution TEM (HRTEM) observation reveals that the nanoparticle of α-Fe was polycrystals or twins, which was real or quasi two-dimension in shape, and whose space orientation was strictly controlled by the graphene. Based on the experiment results, a possible growth model of the graphite encapsulated α-Fe was proposed.
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Funded by the Natural Science Foundation of Hubei Province (No.2004ABA090) and the Fund from the Chengguang Plan of Wuhan (No. 20065004116-35)
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Cao, H., Li, R., Gui, Q. et al. Characteristics and microstructure of graphite encapsulated iron nanoparticles. J. Wuhan Univ. Technol. 22, 214–217 (2007). https://doi.org/10.1007/s11595-005-2214-8
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DOI: https://doi.org/10.1007/s11595-005-2214-8