多孔钛负载TiO_2纳米管复合材料的制备及其光催化性能研究  

Research on the Preparation and Photocatalytic Property of TiO_2 Nanotubes Loaded Porous Ti Composite

作　　者：陶玉强[1] 苏建民 向鸿 乔鹏真 赵飞龙 史乾源 

机构地区：[1]南华大学化学化工学院,湖南衡阳421001

出　　处：《南华大学学报（自然科学版）》2017年第3期107-113,共7页Journal of University of South China：Science and Technology

基　　金：湖南省教育厅优秀青年项目(16B221);衡阳市科技局应用基础研究计划(2016K153);南华大学引进高层次人才启动基金(2015XQD09);湖南省大学生研究性学习和创新性实验计划项目(湘教通[2016]283号)

摘　　要：针对TiO_2纳米粉末在废液处理过程中回收难的问题,采用阳极氧化的方法在孔隙度为30%的多孔钛上制备TiO_2纳米管,主要研究了HF浓度、氧化时间和氧化电压对TiO_2纳米管显微形貌的影响,并选用罗丹明B(RhB)溶液作为处理对象,研究多孔钛负载TiO_2纳米管复合材料的光催化性能.结果表明:当电解液中HF质量分数为0.6%、氧化时间为2 h、氧化电压为30 V时,可在多孔钛上生长结合牢固、均匀分布的TiO_2纳米管;经紫外光照射5 h,多孔钛负载TiO_2纳米管复合材料对RhB溶液的光催化效率可达77.2%,而相同条件下,钛片负载TiO_2纳米管的光催化效率仅71.2%.In order to solve the problem that TiO_2 nanopowder is difficult to be recovered in the process of liquid waste disposal,TiO_2 nanotubes loaded on porous titanium with 30%porosity were prepared by anodic oxidation in this paper.The effects of the concentration of HF in electrolyte,the oxidation time,and the oxidation voltage on the micrographs of TiO_2 nanotubes were investigated.And rhodamine B( RhB) solution was chosen as the object to study the photocatalytic property of TiO_2 nanotubes loaded porous titanium.The results showthat regular and homogeneous TiO_2 nanotubes can grow on porous titanium when the mass fraction of HF is 0.6%,the oxidation time is 2 h and the oxidation voltage is 30 V.The photocatalytic efficiency of the TiO_2 nanotubes loaded porous Ti is 77. 2% for RhB solution after 5 h ultraviolet irradiation,while that for TiO_2 nanotubes loaded titanium sheet prepared under same condition is only 71.2%.

关 键 词：多孔钛 阳极氧化 TIO2纳米管 光催化 

分 类 号：TB34[一般工业技术—材料科学与工程]