Purification of HiPCO carbon nanotubes via organic functionalization
Purification of HiPCO carbon nanotubes via organic functionalization
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DOI：
10.1021/ja0260869
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发表时间：
2002-12-04
影响因子：
15
通讯作者：
Kuzmany, H
中科院分区：
文献类型：
--
作者：
Georgakilas, V;Voulgaris, D;Kuzmany, H
我们报道了一种纯化HiPCO单壁碳纳米管（SWNT）的新方法，该方法包括以下步骤：(a)制备的纳米管（原始管，p-SWNT）的有机官能化，(b)可溶性官能化纳米管（f-SWNT）的纯化，(c)去除官能团并回收纯化的纳米管（r-SWNT）在350°c热处理，然后退火到900°c。这些步骤中的每一步都有助于纯化，但只有它们的顺序组合才能获得高纯度的材料。有机功能化使SWNT更易于处理，从而为潜在的实际用途提供了更好的操作。通过拉曼光谱和近红外光谱以及透射电子显微镜研究了纯化管的电子特性。
We report a new method for the purification of HiPCO single-wall carbon nanotubes (SWNT), which consists of the following sequence: (a) organic functionalization of the as-produced nanotubes (pristine tubes,p-SWNT), (b) purification of the soluble functionalized nanotubes (f-SWNT), (c) removal of the functional groups and recovery of purified nanotubes (r-SWNT) by thermal treatment at 350 °C, followed by annealing to 900 °C. Each of these steps contributes to the purification, but only their sequential combination leads to high-purity materials. Organic functionalization makes the SWNT more easy to handle, which results in a better manipulation for potential practical uses. The electronic properties of the purified tubes are investigated via Raman and NIR spectroscopies along with transmission electron microscopy.