阳极氧化法制备氧化钛纳米管阵列及光催化降解氯胺磷  

Titanium oxide nanotube arrays prepared by anodic oxidation method and photocatalytic degradation of chloramine phosphorus

作　　者：龚青[1,2] 尹荔松[3] 郭智博[1] 阳素玉[1] 安科云[1] 

机构地区：[1]中南大学物理科学与技术学院,湖南长沙410083 [2]佛山市技术标准研究院,广东佛山528000 [3]五邑大学分析测试中心,广东江门529020

出　　处：《中南大学学报（自然科学版）》2011年第11期3270-3276,共7页Journal of Central South University:Science and Technology

基　　金：中国博士后基金资助项目(20060390878);湖南省博士后基金资助项目(2007RS4024)

摘　　要：采用阳极氧化法在氢氟酸+冰醋酸+聚乙二醇水溶液恒压处理钛箔,制备结构规整有序的高密度TiO2纳米管阵列。利用电子扫描电镜(SEM)和X线衍射仪(XRD)对纳米管形貌和结构进行表征,考察氧化时间对纳米管阵列形貌和尺寸的影响,绘制并分析电流-时间曲线。选用有机磷药氯胺磷为光催化降解对象,利用钼锑抗分光光度法测量并计算降解率,研究不同热处理温度和阳极氧化时间对光催化降解效果的影响,并采用溶胶-凝胶法制备TiO2纳米薄膜进行光催化对比实验。Using anodic oxidation in HF＋ACOH＋PEG solution at the constant voltage to deal with the titanium foil,the high-density TiO2 nanotube arrays with regular and orderly structure were prepared.The morphology of the nanotubes was characterized by SEM,and the crystal of the nanotubes was analyzed by XRD.The effect of oxidation time on the morphology and size of nanotube arrays were studied,and the current-time curve was obtained.The photocatalytic activities were evaluated by degradation of chloramine phosphorus.The ratio of degradation was measured and calculated by Molybdenum-Antimony Anti-Spectrophotometric method.The influences of annealing temperature and anodic oxidation time of solution were analyzed.The sol-gel method was used to prepare TiO2 thin film,which is used to do photocatalytic comparative experiments.

关 键 词：氧化钛 阳极氧化 纳米管阵列 

分 类 号：O643.3[理学—物理化学]