表面活性剂辅助法制备介孔二氧化钛及其光催化性能

摘要

Using tetrabutyl titanate as the precursor, and redistilled water or anhydrous ethanol as the sol vent, titanium dioxide and vanadium-doped TiO2 catalysts were synthesized by the surfactant-assisted method. The as-prepared photocatalysts were characterized by XRD, nitrogen physical adsorption-desorp tion,etc. The results showed that the products possessed mesoporous structure,and the catalyst prepared in ethanol solvent had uniformly mesoporous structure. Compared with the reference catalyst, vanadium doped TiO, catalyst exhibited higher photocatalytic degradation activity of methylene blue under the same reaction condition.%利用表面活性剂辅助法,以二次蒸馏水或无水乙醇为溶剂、钛酸四丁酯为前驱体,制备TiO2及掺杂钒的TiO2催化剂,通过XRD和N2物理吸附-脱附等技术对催化剂进行表征.结果表明,所制样品均具有介孔结构,其中,以无水乙醇为溶剂溶解表面活性剂制备的催化剂具有较规整的介孔结构.在相同反应条件下,掺杂钒后的催化剂与对比催化剂相比,具有更好的光催化降解亚甲基蓝性能.