Synthesis and Characterization of Porous Carbon/Fe Nanocomposite

doi:10.3724/SP.J.1077.2010.00457

Abstract

Abstract:

Porous carbon/Fe nanocomposite was produced by vacuum impregnation method and following heattreatment process using activated carbon as the raw material. The surface area (BET) and the pore size distribution of the nanocomposite were measured through nitrogen adsorption method at 77K. X-ray diffraction (XRD) and transmission electron microscope (TEM) were used to characterize the microstructure and morphology. Surface area of the C/Fe nanocomposite is 450-650m²/g, and the composite also has a similar pore size distribution to activated carbon in mesoporous range. The C/Fe nanocomposite is composed of amorphous carbon, graphene nanoribbons and Fe nanoparticles. Fe nanoparticles that are encapsulated by graphitic layers distribute uniformly inside the amorphous carbon matrix. The graphene nanoribbons extend throughout the amorphous carbon matrix and interconnect each other to form a graphene nanoribbon network. Reaction process is investigated by a thermo gravimetric analysis (TGA) method, and the growth mechanism of carbon nanoribbons is also discussed.

Key words: activated carbon, carbon nanoribbons, catalytic graphitization, nanocomposite materials

CLC Number:

TQ127

CAO Bin, LIU Qing-Lei, ZHANG Di. Synthesis and Characterization of Porous Carbon/Fe Nanocomposite[J]. Journal of Inorganic Materials, 2010, 25(5): 457-462.

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