Preparation and characterization of ZrO_2/TiO_2 composite photocatalytic film by micro-arc oxidation  

ZrO_2/TiO_2复合光催化膜的微弧氧化法制备及表征(英文)

作　　者：罗强[1] 蔡启舟[1] 李欣蔚[1] 潘振华[1] 李玉洁[1] 陈喜娣[1] 严青松[2] 

机构地区：[1]华中科技大学材料成形与模具技术国家重点实验室,武汉430074 [2]南昌航空大学轻合金加工科学与技术国防重点学科实验室,南昌330063

出　　处：《Transactions of Nonferrous Metals Society of China》2013年第10期2945-2950,共6页中国有色金属学报（英文版）

基　　金：Project(gf200901002)supported by the Open Research Fund of National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology of Nanchang Hangkong University,China

摘　　要：ZrO2/TiO2 composite photocatalytic film was produced on the pure titanium substrate using in-situ Zr（OH）4 colloidal particle by the micro-arc oxidation technique and characterized by scanning electron microscope （SEM）, energy dispersive X-ray （EDX）, X-ray diffraction （XRD） and ultraviolet-visible （UV-Vis） spectrophotometer. The composite film shows a lamellar and porous structure which consists of anatase, futile and ZrO2 phases. The optical absorption edge of film is shifted to longer wavelength when ZrO2 is introduced to TiO2. Furthermore, the photocatalytic reaction rate constants of degradation of rhodamine B solution with ZrO2/TiO2 composite film and pure TiO2 film under ultraviolet irradiation are measured as 0.0442 and 0.0186 h 1, respectively.采用微弧氧化方法和原位生成的Zr(OH)4胶体颗粒,在纯钛基体上制备ZrO2/TiO2复合光催化膜。采用SEM、EDX、XRD、UV-Vis DRS等分析手段,对膜层进行分析表征。结果表明:复合膜显示出层状和多孔的结构,由锐钛矿、金红石和ZrO2组成;相对于纯TiO2膜,复合膜层的光吸收截止边缘产生红移;ZnO2/TiO2复合膜层和纯TiO2膜层在紫外光照射下,对罗丹明B的光催化速率常数分别为0.0442和0.0186 h-1。

关 键 词：pure titanium micro-arc oxidation Zr（OH）4 colloidal particle ZrO2/TiO2 composite photocatalytic film 

分 类 号：O643.36[理学—物理化学]