TiO_2纳米管阵列薄膜光电协同降解亚甲基蓝的研究  

Photoelectrocatalytic Degradation of Methylene Blue by TiO_2 Nanotube Array Prepared by Anodic Oxidation

作　　者：陈怡[1] 施利毅[1,2] 袁帅[1] 吴钧[1] 张美红[2] 方建慧[1,2] 

机构地区：[1]上海大学纳米科学与技术研究中心,上海200444 [2]上海大学理学院,上海200444

出　　处：《无机材料学报》2009年第4期680-684,共5页Journal of Inorganic Materials

基　　金：上海市科委技术创新团队培育项目(06DZ05902);上海市科委学科带头人计划(07XD14014);上海-联合利华研究与发展基金(06SU07001);上海市教育委员会科研创新项目(06AZ077;08YZ09);上海市教委第五期重点学科(J50102);上海市优秀青年教师科研专项基金;上海大学科研创新基金

摘　　要：使用阳极氧化法制备了TiO2/Ti纳米管阵列薄膜材料.TiO2纳米管管孔分布均匀,管径约为80～90nm,平均管长约为1.8μm.在400℃下煅烧2h后,TiO2纳米管阵列为锐钛矿型,并且结构保持良好,没有出现变形、剥落的现象.以TiO2/Ti纳米管阵列薄膜材料为光催化剂,同时施加0～+3.0V范围内变化的电场,考察了外加电压对降解亚甲基蓝光电协同效率的影响.结果表明在外加+1.4V电压的条件下,光电协同效率达到124%.TiO2纳米管阵列与基底Ti板结合牢固,多次重复使用后没有发现降解率的明显变化.TiO2 nanotube array material was prepared by anodic oxidation of a pure titanium sheet. The average length and the diameter of the nanotubes were 1.8μm and 80-90nm respectively. After calcination at 400℃ for 2h, the amorphous nanotube walls converted to anatase phase without distortion and collapse. The TiO2 nanotube array material was used as photocatalyst to degrade methylene blue solution under UV light irradiation and UV lightelectric field respectively. The synergetic effects of UV light and electric field on the degradation of methylene blue were investigated by changing the voltage from 0V to ＋3V. The highest synergetic efficiency of 124% is obtained under ＋1.4V. The degradation activity of the TiO2 nanotube array material used for several times decreases little, which reveals that the TiO2 nanotube array is adhered to the metal substrate stably.

关 键 词：阳极氧化 TIO2纳米管阵列 光电协同 亚甲基蓝 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]