磁控溅射(TiO_2-ZnO)/TiO_2梯度复合薄膜的制备及光致亲水性研究  

Preparation and Photoinduced Hydrophilic Properties of(TiO_2-ZnO)/TiO_2 Gradient Thin Films by Magnetron Sputtering

作　　者：寇钢[1] 白力静[1] 龚振瑶[1] 赵志明[1] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048

出　　处：《人工晶体学报》2012年第1期94-99,共6页Journal of Synthetic Crystals

基　　金：陕西省科学研究计划(09JK608);西安理工大学博士基金(210710);教育部大学生创新性实验计划(101070011)

摘　　要：采用磁控溅射离子镀设备制备了(TiO2-ZnO)/TiO2梯度复合薄膜,通过TEM、AFM、Raman、XPS分析了复合薄膜的结构、形貌和表面羟基含量,以甲基橙作为有机降解物,研究了(TiO2-ZnO)/TiO2梯度复合薄膜与普通TiO2-ZnO复合薄膜和TiO2薄膜在光催化性能和光致亲水性能上的差异。结果表明:(TiO2-ZnO)/TiO2梯度复合薄膜具有以主体为TiO2-ZnO层、顶层为TiO2的梯度结构,且薄膜表面致密、粒径均匀(10～14 nm),光催化性和亲水性均优于普通TiO2-ZnO复合薄膜和TiO2薄膜,且其光波响应范围红移至450 nm、表面羟基含量高达12.53%,同时梯度复合薄膜的抗光腐蚀性能良好,4 h以后其润湿角仍保持不变。（TiO2-ZnO）/TiO2 gradient composite thin films were prepared by ion plating magnetron sputtering technique.The structure,morphology and surface hydroxy group of composite thin films were investigated by TEM,AFM,Raman and XPS.The differences of photocatalytic activity and hydrophilic property were analyzed between（TiO2-ZnO）/TiO2 gradient composite thin films and ordinary TiO2-ZnO,TiO2 thin films.The results show that the（TiO2-ZnO）/TiO2 composite gradient films were constituent of TiO2-ZnO composite key body and TiO2 top layer,the surface morphology of（TiO2-ZnO）/TiO2 film was compact and uniform,and the grain size was about 10-14 nm.The photocatalysis and hydrophilic properties of（TiO2-ZnO）/TiO2 gradient composite films were better than ordinary TiO2-ZnO composite thin films and TiO2 thin films,and its light response region was extended to the visible region（450 nm）.The XPS indicates that the surface hydroxy group of（TiO2-ZnO）/TiO2 gradient composite thin films were 12.53%.At the same time,The gradient composite thin films show excellent resistance to anti-photo corrosion and well stability of contact angle.

关 键 词：磁控溅射 (TiO2-ZnO)/TiO2 梯度 光致亲水性 

分 类 号：O484[理学—固体物理]