镧、铈掺杂TiO_2超滤膜的制备  

The preparation of lanthanum,cerium doped TiO_2 ultrafiltration membrane

作　　者：林玲玲[1,2] 洪昱斌 滕双双[1,3] 夏海平[1] 何旭敏[1] 蓝伟光[3,2] 丁马太[3] 

机构地区：[1]厦门大学化学化工学院,福建厦门361005 [2]三达膜科技(厦门)有限公司,福建厦门361022 [3]厦门大学材料学院,福建厦门361005

出　　处：《功能材料》2014年第6期148-152,共5页Journal of Functional Materials

摘　　要：考察了镧、铈掺杂对二氧化钛（TiO2）超滤膜的影响.镧掺杂可以有效抑制TiO2 晶型随烧结温度增加的急剧转变.镧、铈掺杂可以有效控制膜层的粒径和孔径,并提高其抗酸碱性能.TiO2 膜层粒径为60~80nm,孔径为10~60nm,抗酸碱性能较差;而经镧、铈掺杂后的TiO2 膜层粒径为50nm 左右,孔径为10~20nm,抗酸碱性能较好,其中镧掺杂效果优于铈掺杂.The influences of lanthanum and cerium doping on the performance of Ti（）z ultrafiltration membrane were investigated. The significant TiO2 crystal structure change with the increase of calcination temperature could be effectively suppressed by lanthanum doping. I.anthanum and cerium doping could not only effectively control the particle and pore sizes in membrane layer, but also improved the acid and alkali resistance. TiO2 membrane layers were obtained with particle sizes of 60-80 nm and bore diameters of 10 -60 nm. I.anthanum and cerium doping TiO2 membrane layers were obtained with particle sizes around ,50 nm and bore diameters of 10-20 nm. In addition, the performance of lanthanum doping was better than cerium doping.

关 键 词：镧 铈 掺杂 TIO2 超滤膜 

分 类 号：TB332[一般工业技术—材料科学与工程]