【摘要】 为制备完整无缺陷的ＴｉＯ２担载超滤膜，本文采用溶胶一凝胶法（Ｓｏｌ－Ｇｅｌ法）的颗粒法制备钛溶胶，考察了制膜液组成、膜厚度以及烧结温度对膜孔结构和性能的影响。结果发现以钛酸丁酯为溶胶前驱物，采用颗粒法，可制备粒径适宜的稳定溶胶。膜的完整性与有机添加剂的量及膜的厚度密切相关，膜的渗透通量和孔径随着烧结温度的升高而增大。本文所制备的氧化钛超滤膜的孔径为１．８－４０ｎｍ，厚度为１．５－２μｍ，纯水渗透性达６．７－８７．０×１０（－１１）ｍ·ｓ（－１）·Ｐａ（－１）。更多还原

【Abstract】 Crack-free supported TiO₂ membranes with ultraporous have been synthesized fromcolloidal titania sols by sol-gel technique. The conditions of casting solution and the sinteringtemperature played important roles on nilcrostfucture of TiO₂ ultrafiltfation membranes. For the samecasting solution, the membrane pore size could be contfolled by the change of sintering temperature. Ifthe thickness of the top layer was at 1 .5-2μm, the range of the pore size was at 1 .8-40urn, and the purewater permeability was at 6.7-87.0x10-11 m. s-1. Pa-1.更多还原