钇掺杂有序多孔TiO_2薄膜的制备与可见光催化性能  

Preparation and Visible-Light Photocatalysis Property of Yttrium-Doped Ordered Porous TiO_2 Thin Films

作　　者：江学良[1] 吉钰纯[1] 范一泓[1] 杜银[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,武汉430073

出　　处：《硅酸盐学报》2012年第4期555-561,共7页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50773059);湖北省教育厅中青年优秀人才项目(Q20101505);湖北省自然科学基金(2011CBD220)资助项目;武汉工程大学研究生教育创新基金项目(20110034)

摘　　要：采用胶体晶体薄膜为模板,利用溶胶–凝胶法制备了钇掺杂有序多孔TiO2薄膜,通过Fourier变换红外光谱、扫描电子显微镜、X射线衍射、X射线光电子能谱、紫外–可见光谱表征样品的结构和形貌,并以甲基橙为模型化合物研究了钇掺杂有序多孔TiO2薄膜材料可见光催化性能。结果表明:钇掺杂有序多孔TiO2薄膜规整致密,晶型为锐钛矿型,样品中钇元素含量约为1.2%。钇掺杂使得TiO2吸收光红移至可见光区,钇掺杂有序多孔TiO2薄膜可见光催化性能好于未掺杂有序多孔TiO2薄膜。A yttrium-doped ordered porous TiO2 thin film was prepared by a sol–gel and colloidal crystals template method.The morphology structure of the film was characterized by Fourier transform infrared spectroscopy（FTIR）,scanning electron microscopy（SEM）,X-ray diffraction（XRD）,X-ray photoelectron spectroscopy（XPS） and UV–Vis analysis,respectively.The photocatalysis property was also investigated.The results show that the yttrium-doped ordered porous TiO2 thin film is compact and ordered,but has some collapse of pores.The anatase form of porous TiO2 thin film was not changed by yttrium-doped treatment.The XPS analysis indicated that yttrium-doped TiO2 thin film could be prepared,and the content of yttrium element was 1.2%.The UV–Vis analysis showed that the yttrium-doped TiO2 thin film red-shifted into the visible region.The degradation of methyl orange result revealed that the visible-light photocatalysis property of yttrium-doped TiO2 was better than that of the pure TiO2.

关 键 词：胶体晶体薄膜 有序多孔 二氧化钛 钇掺杂 可见光催化 

分 类 号：TB34[一般工业技术—材料科学与工程]