Synthetic approaches to borocarbonitrides, BC{sub x}N (x=1-2)

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.08.034· OSTI ID:21580055

Kumar, Nitesh; Raidongia, Kalyan; Mishra, Abhishek K; Waghmare, Umesh V; Sundaresan, A ^[1]; Rao, C N.R., ^[1]

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1. Chemistry and Physics of Materials Unit, CSIR Centre of Excellence in Chemistry and International Centre for Materials Science, Theoretical Sciences Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064 (India)

In order to synthesize borocarbonitrides of the general formula BC{sub x}N where x varies between 1 and 2, we have carried out high-temperature gas phase reaction of BBr{sub 3} with a mixture of ethylene and ammonia. The composition of the product was close to BC{sub 1.6}N as shown by x-ray photon spectroscopy (XPS) and electron energy loss spectroscopy (EELS). The products were further characterized by infra-red, Raman and other spectroscopic techniques. The borocarbonitrides obtained from the gas phase reaction have low surface areas, in contrast to those of similar compositions prepared by the urea method. First principles calculations show that the most stable structures of the compositions BCN and BC{sub 2}N contain BN-rich and carbon-rich domains where BN{sub 3} and NB{sub 3} units are present. - Graphical abstract: Vapor phase synthesis of BC{sub x}N (x=1-2) by the reaction of BBr{sub 3}, ethylene and ammonia leads to the formation of pan-like structure. Highlights: > We have carried out vapor phase reaction of BBr{sub 3}, ethylene and ammonia to synthesize BC{sub x}N (x=1-2). > HRTEM and AFM show the formation of pan-like structures with the central region formed of single layer of BC{sub x}N. > Borocarbonitrides formed by vapor phase synthesis show limited adsorption properties as compared to the urea route. > First principles calculations show that the most stable structure of the compositions BCN and BC{sub 2}N contain BN-rich and carbon-rich domains where BN{sub 3} and NB{sub 3} units are present.

• OSTI ID: 21580055
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 11; Other Information: DOI: 10.1016/j.jssc.2011.08.034; PII: S0022-4596(11)00474-9; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIA
ATOMIC FORCE MICROSCOPY
BORON BROMIDES
BORON NITRIDES
ENERGY-LOSS SPECTROSCOPY
ETHYLENE
SYNTHESIS
TEMPERATURE RANGE 0400-1000 K
TRANSMISSION ELECTRON MICROSCOPY
VAPORS
X RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY
ALKENES
BORON COMPOUNDS
BROMIDES
BROMINE COMPOUNDS
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELECTRON SPECTROSCOPY
FLUIDS
GASES
HALIDES
HALOGEN COMPOUNDS
HYDRIDES
HYDROCARBONS
HYDROGEN COMPOUNDS
IONIZING RADIATIONS
MICROSCOPY
NITRIDES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PNICTIDES
RADIATIONS
SPECTROSCOPY
TEMPERATURE RANGE