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	Vertically aligned carbon nanotube arrays assembled on glassy carbon electrode
	Zhao, Hua-Zhang ; Sun, Juan-Juan ; Shi, Gang
	2010
英文摘要	Carbon nanotubes have been widely utilized in electrode modification for their fascinating electrochemical catalytic properties. Given that the tube ends are the reactive sites of carbon nanotubes, modifying electrode with up-right carbon nanotubes is particularly desired. However so far, the well-organized standing carbon nanotubes on carbon electrode can only be realized by in situ nanotube growth which is very complicated and hard to manage. Herein, we present a new strategy to modify carbon electrode surface with vertically aligned carbon nanotubes. The single -walled carbon nanotubes were first chemically oxidized and carboxyl-derivatized at the open ends. The underlying glassy carbon electrode was introduced with nitrophenyl group via the chemical reduction of the corresponding nitrobenzenediazonium tetrafluoroborate salt. Then aminophenyl groups on electrode were obtained by reduction of nitrophenyl group in alkaline iron ammonium sulfate solution. Finally the nanotubes were attached through acylation-amidation. X-ray photoelectron spectroscopy and cyclic voltammetry were employed to characterize the two reduction reactions. Tapping mode atomic force microscopy (AFM) images clearly show that nanotubes have been successfully vertically organized on the glassy carbon electrode surface. Electrochemical behavior of glucose oxidase on the assembled electrode was measured to test the electrode performance.; EI; 0
语种	英语
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/329835]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zhao, Hua-Zhang,Sun, Juan-Juan,Shi, Gang. Vertically aligned carbon nanotube arrays assembled on glassy carbon electrode. 2010-01-01.

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