Synthetic routes and formation mechanisms of spherical boron nitride nanoparticles

Tang, Chengchun, Bando, Yoshio, Huang, Yang, Zhi, Chunyi and Golberg, Dmitri (2008) Synthetic routes and formation mechanisms of spherical boron nitride nanoparticles. Advanced Functional Materials, 18 22: 3653-3661. doi:10.1002/adfm.200800493


Author Tang, Chengchun
Bando, Yoshio
Huang, Yang
Zhi, Chunyi
Golberg, Dmitri
Title Synthetic routes and formation mechanisms of spherical boron nitride nanoparticles
Journal name Advanced Functional Materials   Check publisher's open access policy
ISSN 1616-301X
1616-3028
Publication date 2008-11-24
Sub-type Article (original research)
DOI 10.1002/adfm.200800493
Volume 18
Issue 22
Start page 3653
End page 3661
Total pages 9
Place of publication Weinheim, Germany
Publisher Wiley - VCH Verlag
Language eng
Formatted abstract
A new concept is proposed to explain the formation of spherical boron nitride (BN) nanoparticles synthesized by the chemical vapor deposition (CVD) reaction of trimethoxyborane (B(OMe)3) with ammonia. The intermediate phases formed during the CVD under different reaction conditions are analyzed by X-ray diffraction, electron microscopy, thermogravimetry, and spectroscopy techniques. The transition mechanism from an intermediate B(OMe)3–xH3–xN (x < 2) phase having single B[BOND]N bonds to the BN nanoparticles is elucidated. This particularly emphasizes the CVD temperature effect governing the conversion of the N[BOND]H···O[BOND]B hydrogen bonds in (OMe)3B · NH3 into the N[BOND]B bonds in B(OMe)3–xH3–xN. The spherical morphology strongly depends on the remnant impurity oxygen formed upon Me2O group elimination in the intermediate. Two types of spherical BN nanoparticles primarily attractive for immediate commercialization (with C and H impurities at a level less than 1 wt %) are synthesized by the adjustment of experimental parameters: high oxygen-containing (∼6.3 wt %) BN spheres with a diameter of ∼90 nm and a specific surface area of 26.8 m2 g−1; and low oxygen-containing (<1 wt %) BN spheres with a diameter of ∼30 nm and a surface area of 52.7 m2 g−1. Finally, the regarded synthetic techniques are fully optimized in the present work.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
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