中文摘要：

以阳极氧化法制得的TiO2纳米管阵列为前驱体,用浸渍法制备了不同铜掺杂量的TiO2纳米管阵列。采用场发射扫描电镜（FE-SEM）、X射线衍射（XRD）、X光电子能谱（XPS）、荧光光谱（PL）对样品进行表征。以Cr6＋水溶液为目标污染物,对比不同铜掺杂量TiO2纳米管阵列的光电催化还原效果。结果表明,掺杂前后TiO2纳米管阵列在形貌上没有明显变化;掺杂的铜是以Cu2＋的形态存在;掺铜后TiO2纳米管阵列还原效果优于掺铜前;低剂量铜掺杂的TiO2纳米管阵列的还原效果优于高剂量铜掺杂的TiO2纳米管阵列。

英文摘要：

Different amounts of Cu-doped TiO2 nanotube arrays were prepared by dipping method using anodized titania nanotube arrays as precursors.Field emission scanning electron microscopy （FE-SEM）,X-ray diffraction （XRD）,X-ray photoelectron spectra （XPS） and photoluminescence spectra （PL） were used to characterize the samples.Aqueous solution of Cr6＋ was used as target contamination in photoelectrocatalytic reactions to compare reductive effects of different amounts of Cu-doped TiO2 nanotube arrays.The results showed that morphology of titania nanotube arrays had no evident change before and after copper doping.The doped copper in the titania nanotube arrays was confirmed as Cu2＋.The reductive effect of Cu-doped titania nanotube arrays was improved after copper doping;and low-concentration Cu-doped TiO2 nanotube arrays was better than high-concentration Cu-doped ones.