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首页> 外文期刊>Chemical Physics Letters >A catalytic chemical vapor deposition synthesis of double-walled carbon nanotubes over metal catalysts supported on a mesoporous material
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A catalytic chemical vapor deposition synthesis of double-walled carbon nanotubes over metal catalysts supported on a mesoporous material

机译:介孔材料上负载的金属催化剂上双壁碳纳米管的催化化学气相沉积合成

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摘要

Double-walled carbon nanotubes (DWNTs) have been synthesized by catalytic chemical vapor deposition (CCVD) over supported metal catalysts decomposed from Fe(CH3COO)(2) and Co(CH3COO)(2) on mesoporous silica. Bundles of tubes with relatively high percentage of DWNTs, in areas where tubular layered structures could be clearly resolved, have been observed by transmission electron microscopy (TEM). In other areas, crystal-like alignment of very uniform DWNTs was observed for the first time, suggesting that mesoporous silica might play a templating role in guiding the initial nanotube growth. In addition, compatible with nano-electronics research, bridging of catalytic islands by DWNTs has also been demonstrated. (C) 2003 Elsevier B.V. All rights reserved. [References: 34]
机译:通过在介孔二氧化硅上由Fe(CH3COO)(2)和Co(CH3COO)(2)分解的负载金属催化剂上催化化学气相沉积(CCVD)合成了双壁碳纳米管(DWNT)。通过透射电子显微镜(TEM)已经观察到在管层状结构可以清楚分辨的区域中具有相对较高DWNT百分比的管束。在其他区域,首次观察到非常均匀的DWNT的晶体状排列,这表明中孔二氧化硅可能在指导初始纳米管生长中起模板作用。此外,与纳米电子学研究兼容,还证明了DWNT桥接催化岛。 (C)2003 Elsevier B.V.保留所有权利。 [参考:34]

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