采用电化学阳极氧化法在纯Ti片表面制备出结构整齐有序的TiO2纳米管阵列,研究了溶液体系和pH值对TiO2纳米管尺寸和形貌的影响.利用x射线衍射仪和场发射扫描电子显微镜表征了不同条件下制备的TiO2纳米管,20V反应15h,质量分数为0.5%HF+1mol/L(NH4)H2PO4溶液中TiO2纳米管直径为70~90nm,长度约2.2μm.以纳米管薄膜为光阳极,施加0.45V的外加偏压,在125W紫外光照射4h后,初始质量浓度为10mg/L的亚甲基兰COD降解率达到93%.
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