Thermally induced formation of 2D hexagonal BN nanoplates with tunable characteristics
- Graduate School of Department of Advanced Materials Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon (Korea, Republic of)
- Department of Nanomaterials Engineering, Chungnam National University, 99 Daehakro, Yuseong-gu, Daejeon (Korea, Republic of)
- Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeong (Korea, Republic of)
We have investigated a thermally induced combustion route for preparing 2D hexagonal BN nanoplates from B{sub 2}O{sub 3}+(3+0.5k)Mg+kNH{sub 4}Cl solid system, for k=1–4 interval. Temperature–time profiles recorded by thermocouples indicated the existence of two sequential exothermic processes in the combustion wave leading to the BN nanoplates formation. The resulting BN nanoplates were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy, PL spectrometry, and Brunauer–Emmett–Teller surface area analysis. It was found that B{sub 2}O{sub 3} was converted into BN completely (by XRD) at 1450–1930 °C within tens of seconds in a single-step synthesis process. The BN prepared at a k=1–4 interval comprised well-shaped nanoplates with an average edge length ranging from 50 nm to several micrometer and thickness from 5 to 100 nm. The specific surface area of BN nanoplates was 13.7 g/m{sup 2} for k=2 and 28.4 m{sup 2}/g for k=4. - Graphical abstract: 2D hexagonal BN nanoplates with an average edge length ranging from 50 nm to several micrometer and thickness from 5 to 100 nm were prepared by combustion of B{sub 2}O{sub 3}+(3+0.5k)Mg+kNH{sub 4}Cl solid mixture in nitrogen atmosphere. - Highlights: • Thermally induced combustion route was developed for synthesizing BN nanoplates from B{sub 2}O{sub 3}. • Mg was used as reductive agent and NH{sub 4}Cl as an effective nitrogen source. • Temperature–time profiles and the combustion parameters were recorded and discussed. • BN with an average edge length from 50 nm to several micrometer and thickness from 5 to 100 nm were prepared. • Our study clarifies the formation mechanism of BN in the combustion wave.
- OSTI ID:
- 22475570
- Journal Information:
- Journal of Solid State Chemistry, Vol. 225; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
Similar Records
A facile route to high-purity BN nanoplates with ultraviolet cathodoluminescence emissions at room temperature
Synthesis of Uniform Diameter Boron-Based Nanostructures Using a Mesoporous Mg-Al2O3 Template and Tests for Superconductivity
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
AMMONIUM CHLORIDES
BORATES
BORON NITRIDES
BORON OXIDES
COMBUSTION
COMBUSTION WAVES
EMISSION SPECTROSCOPY
FIELD EMISSION
MIXTURES
NANOSTRUCTURES
NITROGEN
SCANNING ELECTRON MICROSCOPY
SOLIDS
SPECIFIC SURFACE AREA
SURFACE AREA
SYNTHESIS
X-RAY DIFFRACTION