TiO_2纳米颗粒/纳米棒阵列复合薄膜的制备及其光电催化性能  

Synthesis and photoelectrocatalytic activities of TiO_2 nanoparticles/nanorods array composite films

作　　者：郝丽娜[1] 于乐[1] 赵尹[1] 王竹仪[1] 任鑫[1] 张美红[1] 施利毅[1] 袁帅[1] 

机构地区：[1]上海大学纳米科学与技术研究中心,上海200444

出　　处：《功能材料》2014年第6期79-82,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51202138);上海市科委自然科学基金资助项目(12ZR1410500);上海市第三期重点学科建设资助项目(S30107);上海市教委第五期重点学科建设资助项目(J50102)

摘　　要：以金属钛箔为钛源,采用双氧水和盐酸体系,通过水热法制备合成TiO2纳米棒阵列薄膜,并通过调节双氧水和盐酸的用量,调控TiO2纳米棒阵列薄膜的微观形貌和物相构成。结合溶剂挥发自组装法将TiO2纳米颗粒引入纳米棒阵列中,得到复合型TiO2光催化剂。以亚甲基蓝为模拟污染物,考察TiO2复合薄膜的光催化活性。通过扫描电镜(SEM)和X射线衍射(XRD)测试对TiO2复合薄膜的物相和表面形貌等进行了表征,并采用电化学交流阻抗法(EIS)分析其表面电荷转移特性。TiO2纳米颗粒/纳米棒阵列复合薄膜在光电协同条件下,展示出高的光电催化活性。Highly ordered TiO2 nanorod arrays were prepared using Ti plate as titanium source in HCI and H2O2 system. The microstructure morphology and crystallinity were controlled by the modification of the molar ratio of HCI and H2O2. Evaporation induced sel^assembly （EISA） strategy was also used to introduce TiO2 nanop articles into nanorod arrays. The photocatalytic performance of composite catalyst was investigated by using methylene blue （MB） as simulated contamination. The structure and compositions of photocatalysts were char acterized by scanning electron microscope （SEM） and Xray diffraction （XRT））. Effects of incorporation of TiO~ nanoparticles on the charge transfer rate of the TiO2 nanorod arrays were investigated with electrochemical im pedance spectroscopy （EIS） analysis. The TiO2 nanoparticles/nanorod arrays composite photocatalyst showed high photoeleczrocatalytic activity.

关 键 词：TiO2纳米棒阵列 TIO2纳米颗粒 水热法 光电催化 

分 类 号：TB332[一般工业技术—材料科学与工程]