Synthesis of Water‐Dispersible Boron Nitride Nanoparticles. Issue 19 (27th May 2014)

• Record Type: Journal Article
• Authors: Xiong, Chengjia; Tu, Weixia
• Is Part Of: European journal of inorganic chemistry. Issue 19(2014)
• Page Start: 3010
• Page End: 3015
• Publication Date: 2014-05-27
• Subjects: Boron -- Nitrides -- Nanostructures -- Copper oxide -- Photoelectron spectroscopy -- Aqueous dispersibility -- X‐ray diffraction; Chemistry, Inorganic -- Periodicals; Organometallic chemistry -- Periodicals; Bioinorganic chemistry -- Periodicals; Solid state chemistry -- Periodicals; 546
• DOI: 10.1002/ejic.201402150
• Languages: English
• ISSNs: 1434-1948

Abstract

Abstract: Spherical boron nitride nanoparticles with good aqueous dispersibility were synthesized by means of a direct reaction of boric acid and ammonium chloride. The X‐ray powder diffraction pattern confirmed the hexagonal BN structure ( h‐ BN) with d 002 = 3.33 Å. Copper oxide (CuO) was found to affect the morphology and surface properties of the BN nanoparticles. The average size of the spherical h ‐BN nanoparticles synthesized with the addition of CuO was about 30 nm. The h ‐BN had a high surface area of 75 m 2 g –1 and a mesoporous volume of 0.32 cm 3 g –1 . The presence of CuO during the synthesis could enhance the surface electronegativity of the h ‐BN nanoparticles and change their isoelectric point to pH = 2.7. The zeta potentials of BN were between –30 and –50 mV in the pH range of 4–10. The h ‐BN nanoparticles were well dispersed and stable in aqueous solution. Abstract : Small‐sized hexagonal boron nitride ( h ‐BN) nanoparticles have been synthesized. Copper oxide plays a role in changing the surface properties of h ‐BN nanoparticles and improving their aqueous dispersibility. The h ‐BN nanoparticles can be well dispersed and are stable in aqueous solution.