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Materials Chemistry and Physics
Year: 2009  |  Volume: 116  |  Issue: 2-3  |  Page No.: 323 - 326

Multi-walled carbon nanotubes (MWCNTs) functionalized with amino groups by reacting with supercritical ammonia fluids

Lu Shao, Yongping Bai, Xu Huang, Zhangfei Gao, Linghui Meng, Yudong Huang and Jun Ma    

Abstract: For the first time, supercritical ammonia fluid was utilized to simply functionalize multi-walled carbon nanotube (MWCNT) with amino groups. The successful amino functionalization of MWCNTs was proven and the physicochemical properties of MWCNTs before and after supercritical ammonia fluids modifications were characterized using X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), atomic force microscope (AFM) and Raman spectroscopy. The results also indicated that the supercritical ammonia fluids had the visible effects on the nanostructure of carbon nanotubes. Our novel modification approach provides an easy way to modify MWCNTs with amino groups, which is very useful for realizing “carbon nanotube economy” in the near future.

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