【摘要】 采用化学处理的方法实现了使封闭的碳纳米管端头打开并接上羧基官能团,同时用透射电镜显微图和红外谱对羧基修饰碳纳米管进行了表征。用循环伏安法测定了未修饰和修饰了的碳纳米管电极在1mmol/LFe2++0.2mol/LHClO4中的电化学行为。实验表明,将碳纳米管羧基修饰后电化学性能得到了很大的改善,提高了电化学活性。实验还发现,羧基修饰碳纳米管电极对多巴胺氧化过程有强的催化作用。更多还原

【Abstract】 The end of carbon nanotubes are opened and functional groups are successfully fixed on them using chemical method, which was characterized by TEM image and IR spectra. Electrochemical behavior is conducted by cyclic voltammetry both on raw carbon nanotube electrode and carboxyl-modified carbon nanotube electrode in 1 mmol/L Fe2++ 0.2 mol/L HClO4. The results show that the chemical properties of carbon nanotube are improved and the electrochemical activity of carbon nanotube is greatly enhanced after chemical treatment. The experiments also reveal significant electrocatalytic behaviors toward the redox of dopamine on the carboxyl-modified carbon nanotube electrode.更多还原