电解液温度对二氧化钛纳米管阵列结构及光电性能的影响  

Effect of Electrolyte Temperature on the Structure and Photoelectric Performance of TiO_2 Nanotube Arrays

作　　者：林晓霞[1,2] 刘佳[2] 付德刚[2] 

机构地区：[1]金陵科技学院材料工程学院,南京211169 [2]东南大学生物电子学国家重点实验室,南京210096

出　　处：《人工晶体学报》2014年第6期1544-1548,共5页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51172043);金陵科技学院博士启动基金(JIT-B-201307)

摘　　要：以氟化铵（NH4F）、乙二醇溶液为电解液,在不同的电解液温度（0~50℃）条件下,采用电化学阳极氧化法制备二氧化钛（TiO2）纳米管阵列。采用扫描电子显微镜（SEM）、X射线衍射仪（XRD）、紫外-可见分光光度计（UVVis）对TiO2纳米管阵列的形貌、结构和光学性能进行表征。结果表明,电解液温度高于20℃均能制备出纳米管阵列。光照下电解液温度40℃时制备的TiO2纳米管阵列具有最高光电流密度（Iph）0.2408 mA/cm2。以活性艳红X-3B为目标降解物,在室温、紫外光照射条件下考察了电解液温度对光催化活性的影响,结果显示电解液温度40℃时制备的TiO2纳米管阵列具有最高的光催化活性。TiO2nanotube arrays were prepared by anodic oxidation method in NH4F and ethylene glycol solution under different electrolyte temperature（0-50 ℃）.The samples were characterized by scanning electron microscope（SEM）,X-ray diffraction（XRD） and UV-Vis spectrophotometer.The results indicate that the nanotube arrays could be fabricated while the electrolyte temperature above 20 ℃.The sample prepared at electrolyte temperature 40 ℃ has the highest photocurrent density of 0.2408 mA/cm2.The photocatalytic activities of the prepared samples were evaluated for the degradation of dye Reactive Brilliant Red X-3B under UV light irradiation at room temperature.The results indicate that the nanotube arrays prepared at electrolyte temperature 40 ℃ exhibit the highest photocatalytic activity.

关 键 词：TIO2纳米管阵列 电解液温度 阳极氧化 光电流 光催化 

分 类 号：O643[理学—物理化学]