Synthesis of Boron Nitride Nanotubes by a Template-Assisted Polymer Thermolysis Process

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• 作者：Mikhael Bechelany ; Samuel Bernard ; Arnaud Brioude ; David Cornu ; Pierre Stadelmann ; Catherine Charcosset ; Koffi Fiaty ; Philippe Miele
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：September 13, 2007
• 年：2007
• 卷：111
• 期：36
• 页码：13378 - 13384
• 全文大小：597K
• 年卷期：v.111,no.36(September 13, 2007)
• ISSN：1932-7455

文摘

Highly ordered arrays of boron nitride nanotubes (BN-NTs) were prepared for the first time by combining apolymer thermolysis route and a template process. The strategy involves four steps, i.e., synthesis of a liquidpolymeric borazine, liquid-phase infiltration of an alumina membrane, thermolysis at 1200 C under nitrogenof the polymer confined in the 200 nm ordered nanochannels, and template etching to generate BN-NTsarrays supported by a BN sheet. Their crystallinity was controlled through further high-temperature treatments.The thin multiwall BN-NTs displaying dimensions corresponding to the pore size were characterized byelectron microscopies and electron energy loss spectroscopy. It was demonstrated that the formation ofnanotubes was governed by evaporation of low molecular weight species during the initial steps of thethermolysis, causing loss of nanowire integrity, while a thin film remained and covered the pore walls as aresult of the high surface energy of the alumina mold.