中文摘要：

本文为提高二氧化钛的光催化活性,选择稀土金属铌为掺杂离子对二氧化钛进行金属掺杂改性处理,采用溶胶-凝胶法制备出铌掺杂二氧化钛,对其进行了扫描电子显微镜、X射线衍射等测试,并利用亚甲基蓝为目标污染物探究铌掺杂二氧化钛的光催化性能。

英文摘要：

In this paper,rare- earth metal niobium is selected for the doping of titanium dioxide. Nb- Ti O2 is prepared by sol- gel method. Physicochemical properties of Nb- Ti O2 are characterized by scanning electron microscope（ SEM） and X- Ray diffraction（ XRD）. In order to study the photocatalytic performance of Nb- Ti O2,the removal of methylthionine chloride is also investigated.