SnO_2纳米晶粒对α-Al_2O_3微滤膜的改性作用(英文)  

MODIFICATION OF SnO_2 NANOPARTICLES ONα-Al_2O_3 MICROFILTRATION MEMBRANE

作　　者：周健儿[1] 胡学兵[1] 于云[2] 胡行方[2] 胡飞[1] 汪永清[1] 张小珍[1] 

机构地区：[1]景德镇陶瓷学院江西省高等学校无机膜重点实验室,江西景德镇333001 [2]中国科学院上海硅酸盐研究所,上海200050

出　　处：《硅酸盐学报》2007年第11期1444-1447,共4页Journal of The Chinese Ceramic Society

基　　金：国家重点基础研究发展规划973预研资助项目(2004CCA-07500);中法合作(PRA04-06)资助项目。

摘　　要：采用原位生成法,对α-Al_2O_3微滤膜进行SnO_2改性,考察了SnCl_4浓度和浸渍次数对膜水通量及膜孔结构的影响规律。结果表明:当SnCl_4溶液的浓度为0.05 mol/L、浸渍次数为二次时,SnO_2的改性作用最佳,改性后的α-Al_2O_3微滤膜纯净水通量达到6.52 m^3/(m^2·h)。同时发现,经SnO_2改性后的α-Al_2O_3微滤膜,其孔径分布窄,具有良好的孔结构。α-alumina microfiltration membranes were modified using SnO2 by means of in situ synthesis. The effects of the SnCl4 concentration and dipping times on the water flux and pore structure of the modified membranes were studied. The structure of SnO2 nanoparticles was observed with a transmission electron microscope and the pore size distribution of the membranes with and without SnO2 modification was examined with a mercury injection apparatus. The results show that the flux of the modified membranes reaches 6.52 m^3/（m^2·h） alter the membranes are immersed twice in a solution of 0.05 mol/L SnCl4. Meanwhile, α-alumina microfiltra- tion membranes modified twice by tin oxide nanoparticles have a narrow pore size distribution and an excellent pore structure. The mechanism of SnO2 modification is also dissussed.

关 键 词：原位生成法 α-氧化铝微滤膜 氧化锡 水通量 

分 类 号：TQ174.75[化学工程—陶瓷工业]