中文摘要：

首先以P123为模板剂利用溶胶-凝胶法制备TiO2载体,然后采用沉淀法制得介孔BiVO4/TiO2复合光催化剂.采用X射线衍射仪、漫反射吸收光谱仪、比表面分析仪对所制得的光催化剂进行了表征.结果表明,催化剂样品中的TiO2主要以锐钛矿型存在,BiVO4为四方相和单斜相共存的混晶,与单纯的BiVO4、TiO2光催化剂相比,BiVO4/TiO2复合光催化剂具有更高的可见光吸收性能、较好的比表面积和均一的介孔结构.腐殖酸的可见光降解试验表明,随着腐殖酸初始浓度的增大,其光降解率逐渐降低,ln（C/C0）对t呈线性关系.试验同步研究了腐殖酸光催化降解过程中荧光光谱、红外光谱和GC-MS谱图的变化情况.

英文摘要：

The TiO2 support was prepared by Sol-Gel method with P123 as a template and the mesoporous BiVO4/ TiO2 catalyst was obtained by the precipitation method. The obtained photocatalysts were characterized by X-ray dif- fraction, UV-visible spectrophotometer and surface area analyzer. It mainly contained anatase TiO2, the mixed crystal BiVO4 with coexisting tetragonal and monoclinic phases. Compared with BiVO4 and TiO2, BiVOJTiO2 im- proved the performance of visible light absorbance and had a specific surface area and uniform mesoporous struc- ture. With the increase of the initial concentration of humic acid, the degradation rate decreased, and the change of In （C/Co） with time on it was linear. This research carried out a preliminary study on the fluorescence, infrared and GC-MS spectral changes in photocatalytic degradation of humic acid.