CNTs was opened,and treated the surface by K2Cr2O7. The loss ratio of CNTs was used to show the effect of oxidation and the morphologies of CNTs was observed by TEM. The results showed that the concentration of K2Cr2O7, oxidation temperature and oxidation time all affected the oxidation results. Among these three factors,oxidation temperature produced the largest effect;As the CNTs was oxidized by K2Cr2O7 ,the wall of CNTs was corroded firstly and made the wall of CNTs thinner,then the curved - site of CNTs was attacked by oxidant and made the CNTs break in several section. So the metal ion existing in solution would enter into the cavity of CNTs. Hydrophilic groups would be introduced in the surface of CNTs with the oxidation reaction continuing. It would be good to the adherence of metal particles.
Journal of Nanchang University(Engineering & Technology Edition)