Abstract
A novel approach to the fabrication of vanadium carbide encapsulated into carbon nanotube (VC@C) core-shell structured composite by thermal treatment with the precursor V3O7·H2O@C was developed for the first time. The as-obtained VC@C were characterized by X-ray powder diffraction (XRD), Raman spectrum, energy-dispersive X-ray spectrometer (EDX), elemental analysis (EA), Fourier transform infrared spectroscopy (FT)–(IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer–Emmett–Teller (BET). The results showed that VC@C with core-shell structures could be successfully synthesized at 1000 °C for 2 h. The specific surface area, average pore size and measured pore volume of VC@C were 135·46 m2/g, 4·443 nm and 0·180 cm3/g, respectively indicating that the as-obtained VC@C composite could be used as a mesoporous material. Furthermore, thermal behaviour of the as-obtained VC@C composite in air was investigated by thermo-gravimetric/differential thermal analyser (TG/DTA). The experimental result revealed that the carbon coated on the surface of VC has high activity with O2 in air atmosphere.
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Acknowledgements
This work was partially supported by the fourth installment of Science and Technology Development 2010 Program of Suzhou (SYG201005), the Fundamental Research Funds for the Central Universities, Independent Research Projects of Wuhan University (217274721) and Luojia Young Scholars Program (217273483).
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ZHANG, Y., ZHANG, J., FAN, M. et al. Exploring a novel approach to fabricate vanadium carbide encapsulated into carbon nanotube (VC@C) with large specific surface area. Bull Mater Sci 36, 345–351 (2013). https://doi.org/10.1007/s12034-013-0476-x
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DOI: https://doi.org/10.1007/s12034-013-0476-x