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1546215 
Journal Article 
Functionalization and dispersion of hexagonal boron nitride (h-BN) nanosheets treated with inorganic reagents 
Nazarov, AS; Demin, VN; Grayfer, ED; Bulavchenko, AI; Arymbaeva, AT; Shin, HJ; Choi, JY; Fedorov, VE 
2012 
Yes 
Chemistry - An Asian Journal
ISSN: 1861-4728
EISSN: 1861-471X 
7 
3 
554-560 
English 
22238118 
WOS:000300871500015 
A mixture of bulk hexagonal boron nitride (h-BN) with hydrazine, 30% H(2)O(2), HNO(3)/H(2)SO(4), or oleum was heated in an autoclave at 100 °C to produce functionalized h-BN. The product formed stable colloid solutions in water (0.26-0.32 g L(-1)) and N,N-dimethylformamide (0.34-0.52 g L(-1)) upon mild ultrasonication. The yield of "soluble" h-BN reached about 70 wt%. The dispersions contained few-layered h-BN nanosheets with lateral dimensions in the order of several hundred nanometers. The functionalized dispersible h-BN was characterized by IR spectroscopy, X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, UV/Vis spectroscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM). It is shown that h-BN preserves its hexagonal structure throughout the functionalization procedure. Its exfoliation into thin platelets upon contact with solvents is probably owing to the attachment of hydrophilic functionalities. 
boron; boron nitride; colloids; nanoparticles; nanosheets