Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5357679 | Applied Surface Science | 2010 | 5 Pages |
Abstract
Nitro groups (-NO2) have been introduced on the surface of multi-walled carbon nanotubes (MWCNTs) by treatment with a mixture of concentrated H2SO4/HNO3 solution at low temperature (60 °C). Such a low-temperature treatment simultaneously can well prevent MWCNTs from the structural damage. From the nitro-modified MWCNTs, MWCNTs can be readily modified with amino groups by reduction of nitro groups. The prepared amino-modified MWCNTs are highly soluble in polar solvents such as dimethylformamide (DMF), alcohol and acetone. Further, as a demonstration, MWCNTs can be functionalized with guest objects, provided by the strong bonding ability of amino groups.
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Authors
Li Wang, Shouai Feng, Jianghong Zhao, Jianfeng Zheng, Zhijian Wang, Li Li, Zhenping Zhu,