【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。更多还原

【Abstract】 The influences of lanthanum and cerium doping on the performance of TiO2ultrafiltration membrane were investigated.The significant TiO2crystal structure change with the increase of calcination temperature could be effectively suppressed by lanthanum doping.Lanthanum and cerium doping could not only effectively control the particle and pore sizes in membrane layer,but also improved the acid and alkali resistance.TiO2membrane layers were obtained with particle sizes of 60-80nm and bore diameters of 10-60nm.Lanthanum and cerium doping TiO2 membrane layers were obtained with particle sizes around 50nm and bore diameters of 10-20nm.In addition,the performance of lanthanum doping was better than cerium doping.更多还原