Coating Multi-walled Carbon Nanotubes with Uniform Silica Shells:Independent of Surface Chemistry |
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| Authors: | LI Ling DENG Xiao-yong BAI Ming-kun WU Ming-hong LIU Yuan-fang |
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| Affiliation: | LI Ling1,DENG Xiao-yong1*,BAI Ming-kun1,WU Ming-hong1,2* and LIU Yuan-fang1,3 1. Institute of Nanochemistry and Nanobiology,2. School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,P. R. China,3. Beijing National Laboratory for Molecular Sciences,Department of Chemical Biology,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871 |
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| Abstract: | A facile and general method was described to coat six types of multi-walled carbon nanotubes, functionalized by either noncovalent or covalent way, with smooth silica shells. 3-Aminopropyltriethoxysilane(APTES) and pH value play important roles in the coating process and the thickness of silica shell could be controlled by the added amount of silicon alkoxides. After the removal of multi-walled carbon nanotubes by calcination, the silica nanotubes were successfully prepared. |
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| Keywords: | Carbon nanotube Silica Core-shell structure |
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