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Nitrogen inserting in fluorinated graphene via annealing of acetonitrile intercalated graphite fluoride
Author(s) -
Fedoseeva Yu. V.,
Okotrub A. V.,
Asanov I. P.,
Pinakov D. V.,
Chekhova G. N.,
Tur V. A.,
Plyusnin P. E.,
Vyalikh D. V.,
Bulusheva L. G.
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201451281
Subject(s) - acetonitrile , xanes , intercalation (chemistry) , x ray photoelectron spectroscopy , graphene , annealing (glass) , absorption spectroscopy , materials science , graphite , nitrogen , infrared spectroscopy , chemistry , analytical chemistry (journal) , spectroscopy , inorganic chemistry , organic chemistry , chemical engineering , nanotechnology , physics , quantum mechanics , engineering , composite material
Fluorinated graphite intercalation compounds (FGICs) with acetonitrile C 2 F x · y CH 3 CN ( x = 0.92, 0.69, and 0.49) have been synthesized using a gaseous mixture of BrF 3 and Br 2 at room temperature and subsequent replacement of the reaction medium components on acetonitrile by isopiestic method. The change in functional composition and electronic structure of FGICs under annealing at 250–260 °C was studied by infrared, X‐ray photoelectron, and near‐edge X‐ray absorption fine structure spectroscopy (NEXAFS) methods. Analysis of the data revealed interaction of acetonitrile with a C 2 F x matrix. The X‐ray spectra detected formation of new nitrogen species attributed to two‐coordinated and mono hydrogenated three‐coordinated atoms. Mechanism of nitrogen incorporation in the fluorinated graphene layers was proposed. Schematic structure of graphite fluoride C 2 F x intercalated with acetonitrile and NEXAFS N K‐edge spectrum of C 2 F 0.69 · 0.137CH 3 CN before and after annealing at 250 °C.