MoO3-promoted synthesis of multi-walled BN nanotubes from C nanotube templates

Citation
D. Golberg et al., MoO3-promoted synthesis of multi-walled BN nanotubes from C nanotube templates, CHEM P LETT, 323(1-2), 2000, pp. 185-191
Citations number
30
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
323
Issue
1-2
Year of publication
2000
Pages
185 - 191
Database
ISI
SICI code
0009-2614(20000609)323:1-2<185:MSOMBN>2.0.ZU;2-J
Abstract
Large-scale synthesis of BN multi-walled nanotube (MWNT) ropes from C MWNT templates was carried out. A mixture of B2O3 and MoO3 was used as an oxidiz ing agent during a chemical reaction involving C MWNT oxidation in a flowin g nitrogen atmosphere at 1773 K. Encapsulation of Mo-based clusters into th e BN MWNTs was simultaneously achieved. The morphology, atomic structure an d chemical composition of MWNTs synthesized at 1773 K with and without MoO3 promoter were compared by means of high-resolution transmission electron m icroscopy and electron energy loss spectroscopy. A striking increase in BN MWNT yield and self-assemblage of tubes into ropes were discovered under Mo O3-promoted synthesis. (C) 2000 Elsevier Science B.V. All rights reserved.