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Synthesis, Structure, and Properties of Mesoporous B/C/N Microspheres
Author(s) -
Raidongia Kalyan,
Hembram K. P. S. S.,
Waghmare Umesh V.,
Eswaramoorthy M.,
Rao C. N. R.
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900377
Subject(s) - graphene , x ray photoelectron spectroscopy , raman spectroscopy , materials science , boron , electron energy loss spectroscopy , thermal stability , mesoporous material , analytical chemistry (journal) , transmission electron microscopy , crystallography , chemical engineering , chemistry , nanotechnology , biochemistry , physics , optics , organic chemistry , chromatography , engineering , catalysis
Reaction of low surface area carbon with a mixture of urea and boric acid at 930 °C yields a composition close to BC 4 N with a graphitic structure. BC 4 N was characterized by electron energy loss spectroscopy, X‐ray photoelectron spectroscopy, transmission electron microscopy, Raman spectroscopy, and X‐ray diffraction. BC 4 N is a porous ceramic with a surface area of 428 m 2 · g –1 , and shows a CO 2 uptake of 40 wt‐%. The layered structure of BC 4 N 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 BC 4 N 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 BC 4 N exhibits an interesting dependence on the ordering of boron and nitrogen on the graphene lattice.