以铜醇盐为原料,搀杂碳纳米管(CNT)采用溶胶一凝胶法在FTO玻璃基片上制备Cu2O/CNT薄膜,通过X射线衍射仪,电镜等分析和表征,确定了Cu2O/CNT薄膜的性质和结构;并对CNT加入量的控制来研究膜阻抗的变化和光电催化性能的改变.通过循环伏安和交流阻抗测试表明Cu2O/CNT复合膜有更低的膜阻抗和优异的催化活性,在偏压-0.5V的条件下膜的光电流可以达到0.15mA.由此证明了CNT的搀杂有效的提高膜电极的光电催化活性和电导率.
Cu2O/CNT complex film were successfully synthesized by the sol-gel method using Cu(OEt)2 and carbon nanotube as precursors. The composition and morphology of complex film were characterized by using X- ray diffraction (XRD) and scanning electron microscopy (SEM); the change of impedance and photoelectric properties was studied by controlling carbon content in film. The photocurrent-time and electrochemical impedance spectroscopy(EIS) experiments of Cu2O/CNT were also performed. The results showed that the electrochemical impedance of film was much small and photoelectrocatalytic activity was perfect. The photocurrent can reach 0. 15 mA at - 0. 5V vs SCE. The high photoelectrocatalytic activity and high conductance can be attributed to the CNT effect among nanocomposite.