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60~80 nm,孔径为10~60 nm,抗酸碱性能较差；而经镧、铈掺杂后的TiO2膜层粒径为50 nm 左右,孔径为10~20 nm,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 TiO2 ultrafiltration membrane were investigated.The significant TiO2 crystal 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.TiO2 membrane layers were obtained with particle sizes of 60-80 nm and bore diameters of 10-60 nm.Lanthanum 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.
参考文献
| [1] | 王冬至,刘福田,刘鑫,张宁.我国无机陶瓷滤膜研究现状与应用前景[J].陶瓷科学与艺术,2005(05):31-35. |
| [2] | Ayral A;Julbe A;Guizard C.Ceramic membrane pro-cessing:new approaches in design and applications[M].Boca Raton:Chemical Processing of Ceramics Press,2005:629-666. |
| [3] | 任常宝,程逵,翁文剑.镧掺杂二氧化钛纳米球涂层的制备与亲水性表征[J].硅酸盐学报,2010(01):83-86. |
| [4] | 蔡河山,刘国光,黎晓霞.简单有效氮掺杂TiO2纳米微晶的制备、表征及其可见光活性[J].功能材料,2012(13):1669-1672. |
| [5] | 徐刘君,燕宁宁,柳清菊.稀土元素与N共掺杂TiO2光催化剂的研究进展[J].功能材料,2012(13):1665-1668. |
| [6] | 郭泉辉,杨建军,毛立群,李庆霖,张治军.镧掺杂二氧化钛光催化性能的研究[J].化学研究,2002(04):4-6. |
| [7] | 陈兴,吴忠华,蔡泉,李志宏,陈中军,孙民华,车传强,李蓉萍.铈掺杂对二氧化钛纳米颗粒微结构的影响[J].核技术,2004(12):890-894. |
| [8] | 王铁,王曰燕,韩志杰.铁和镧共掺杂二氧化钛的光催化活性[J].应用化工,2008(08):913-916. |
| [9] | 张念星,徐明霞,李晓雷,刘祥志,李顺.镧铁共掺杂二氧化钛纳米线阵列的可见光催化性能[J].硅酸盐学报,2008(z1):25-28,33. |
| [10] | Yan Ningning;Zhang Ying;Gong Changjie et al.Prepa-ration and properties on rare-earth element cerium doped nano-titanium dioxide photocatalys[J].Journal of Func-tional Materials,2012,43(01):92-95. |
| [11] | 陈静,石晓波,韩冰,巫海苑.掺镧纳米二氧化钛的微乳液法合成[J].河南化工,2007(01):28-31. |
| [12] | Zhang H;Banfield J F .Understanding polymorphic phase transformation behavior during growth of nanocrystalline ag-gregates:insights from TiO2[J].Journal of Physical Chemistry B,2000,104(15):3481-3487. |
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