Carbon Nanotube-Confined Evolution of Co−Ni Alloy Nanowires with High-Density Lamellar Twin Boundaries

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• 作者：Shouai Feng ; Jianghong Zhao ; Guixiang Du ; Chang Song ; Jinling Song ; Zhenping Zhu
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：October 2, 2008
• 年：2008
• 卷：112
• 期：39
• 页码：15247-15252
• 全文大小：387K
• 年卷期：v.112,no.39(October 2, 2008)
• ISSN：1932-7455

文摘

Co−Ni alloy nanowires were in situ sheathed inside carbon nanotubes by a detonation-assisted chemical vapor deposition. The nanowires exhibit an unusual high-density lamellar-twinned structure. The observations of the frozen intermediates suggested that the nanowires form from a fusion of small alloy particles. The formation of the unusual high-density lamellar-twinned structures is associated with a confinement effect of the closed narrow channels of carbon nanotubes. Within the channels, the fusion of Co−Ni alloy particles proceeds in a unique kinetic environment, in which high-density lamellar twinning boundaries are formed to meet a quick reduction of excess energy.