Plasma treatment of multiwall carbon nanotubes for dispersion improvement in water

Changlun Chen; Ogino, Akihisa; Xiangke Wang; Nagatsu, Masaaki
March 2010
Applied Physics Letters;3/29/2010, Vol. 96 Issue 13, p131504
Academic Journal
Microwave excited Ar/H2O surface-wave plasma was used to treat multiwall carbon nanotubes (MWCNTs) to modify their surface characteristics and thus improve their dispersion capability in water. Changes in the atom composition and structure properties of MWCNTs were analyzed using x-ray photoelectron spectroscopy and Raman spectroscopy, and the surface morphology of MWCNTs was observed by field emission scanning electron microscopy and scanning transmission electron microscopy. The results indicated that Ar/H2O plasma treatment greatly enhanced the content of oxygen, and modified surface microstructure properties. The integrity of nanotube patterns, however, was not damaged.


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