Synthesis, structure, and properties of mesoporous B/C/N microspheres

Raidongia, Kalyan ; Hembram, K. P. S. S. ; Waghmare, Umesh V. ; Eswaramoorthy, M. ; Rao, C. N. R. (2010) Synthesis, structure, and properties of mesoporous B/C/N microspheres Zeitschrift für Anorganische und Allgemeine Chemie, 636 (1). pp. 30-35. ISSN 0044-2313

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/zaac.20...

Related URL: http://dx.doi.org/10.1002/zaac.200900377

Abstract

Reaction of low surface area carbon with a mixture of urea and boric acid at 930°C yields a composition close to BC4N with a graphitic structure. BC4N was characterized by electron energy loss spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy, Raman spectroscopy, and X-ray diffraction. BC4N is a porous ceramic with a surface area of 428 m2·g−1, and shows a CO2 uptake of 40 wt-%. The layered structure of BC4N involves a random distribution of boron, carbon, and nitrogen atoms and shows high thermal stability up to 1000°C. A comparative analysis of the structure and properties of BC4N and graphene using first-principles pseudopotential based density functional theoretical calculations is presented. The calculations predict it to be an insulator. The bulk modulus of BC4N exhibits an interesting dependence on the ordering of boron and nitrogen on the graphene lattice.

Item Type:Article
Source:Copyright of this article belongs to John Wiley and Sons.
Keywords:Boron; BC4N; Ceramics; Graphitic Material; Carbon Dioxide Fixation
ID Code:40008
Deposited On:21 May 2011 06:17
Last Modified:12 Jul 2012 10:15

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