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Materials chemistry and physics v.211, 2018년, pp.270 - 277  

Evidence of hydrogenated carbon in the nanostructure of carbide-derived carbons obtained from hydrochlorination reaction

González-García, P. (CONACYT - Centro de Ingeniería y Desarrollo Industrial, Av. Pie de la Cuesta No. 702, 76125, Querétaro, Qro, Mexico ) ; Urones-Garrote, E. (Centro Nacional de Microscopía Electrónica, Universidad Complutense, E-28040, Madrid, Spain ) ; García-González, L. (Centro de Investigación en Micro y Nanotecnología, Universidad Veracruzana, Calzada Ruiz Cortínes No. 455, 94294, Boca del Río, Veracruz, Mexico ) ;
  • 초록  

    Abstract Titanium carbide derived carbons were obtained from hydrochlorination reaction at 300, 500, 700 and 900 °C. The effect of the mixture hydrogen/chlorine, as reaction atmosphere, has been analyzed using X-ray diffraction, Fourier transform infrared, Raman and electron energy loss spectroscopies. Infrared spectroscopy showed several bands related to the presence of CH, CH 2 and CH 3 groups, a feature not observed in chlorinated carbide derived carbons. The Raman spectra displayed the classical bands of graphitic materials: D, G, and 2D; however, presence of three bands located at ≈ 680, 838 and 1060 cm −1 , revealed presence of small diamond and diamonoid clusters. In addition, electron energy loss spectroscopy data revealed sp 2 carbon bonding content from 82 to 100% and mass density in the range of 1.4–2.2 g/cm 3 , indicating changes in the carbon hybridization. Finally, transmission electron microscopy analyses showed the evolution in the local nanostructure as result of the thermal treatments. Highlights Titanium carbide derived carbons were obtained from hydrochlorination reaction. Spectroscopy studies provided evidence of formation of sp 3 hybridized carbon. The Raman bands located at ≈ 680, 838 and 1060 cm −1 , revealed diamonoid clusters. Electron energy loss spectroscopy data yield sp 2 carbon bonding from 82 to 100%. Graphical abstract [DISPLAY OMISSION]


  • 주제어

    Titanium carbide .   Hydrochlorination .   Hydrogenated amorphous carbon .   Microscopy .   Spectroscopy.  

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