选用聚醚酮(PEK)、聚醚砜(PES)、酚酞聚醚砜(PES-C)3种不同的高分子材料,用浸没沉淀相转化法制备了一系列不同纳米TiO2含量的纳米TiO2复合膜,并通过扫描电子显微镜(SEM),X射线能谱仪(EI)S),水接触角测试及超滤实验考察了纳米TiO2对膜的结构及性能的影响.结果表明,纳米TiO2与高分子超滤膜的复合显著改善了膜的亲水性.在截留率较高且基本保持不变的情况下,3种超滤膜的纯水通量和BSA溶液通量都得到了不同程度的提高.而由EDS分析可知,经过一定的时间,膜表面的TiO2会部分脱落,TiO2粒子与膜表面结合的稳定性问题不容忽视.在选用的3种材料中,TiO2粒子与PES-C膜表面结合较为牢固,且复合后BSA溶液通量的增幅最大,通量衰减较小,具有更好的膜结构和性能.
参考文献
| [1] | 皮物·斯壮.聚合物-无机纳米复合材料[M].北京:化学工业出版社,2003 |
| [2] | K. A. Mauritz;D. A. Mountz;D. A. Reusahle;R. I. Blackwell .Self-assembled organic/inorganic hybrids as membrane materials[J].Electrochimica Acta,2004(2/3):565-569. |
| [3] | Akira Fujishima;Tata N. Rao;Donald A. Tryk .Titanium dioxide photocatalysis[J].Journal of photochemistry and photobiology, C. Photochemistry reviews,2000(1):1-21. |
| [4] | Wang R;Hashimoto K;Fujishima A et al.Light-induced amphiphilic surfaces[J].Nature,1997,388(6641):431-432. |
| [5] | R.Molinari;F.Pirillo;M.Falco;V.Loddo;L.Palmisano .Photocatalytic degradation of dyes by using a membrane reactor[J].Chemical Engineering and Processing,2004(9):1103-1114. |
| [6] | Molinari R;Pirillo F;Falco M et al.Heterogeneous photocatalytie degradation of pharmaceuticals in water by using polycrystalline TiO2 and a nanofiltration membrane reactor[J].Catalysis Today,2006,118:205-213. |
| [7] | Molinari R;Mungari M;Drioli E et al.Study on a photocatalytie membrane reactor for waste purification[J].Catalysis Today,2000,55:71-78. |
| [8] | Molinari R;Grande C;Drioli E et al.Photocatalytic membrane reactors for degradation of organic pollutants in water[J].Catalysis Today,2001,67:273-279. |
| [9] | Molinari R.;Palmisano L.;Drioli E.;Schiavello M. .Studies on various reactor configurations for coupling photocatalysis and membrane processes in water purification[J].Journal of Membrane Science,2002(1/2):399-415. |
| [10] | Kim S H;Kwak S Y;Sohn B H et al.Design of TiO2 nanoparticle self-assembled aromatic polyamide thin-film-eomposite (TFC) membrane as an approach to solve biofouling problem[J].Journal of Membrane Science,2003,211:157-165. |
| [11] | Bae T H;Tak T M .Preparation of TiO2 self-assembled polymeric nanocomposite membnme and examination of their fouling mitigation effects in a membrane bioreactor system[J].Journal of Membrane Science,2005,266:1-5. |
| [12] | Yanan Yang;Peng Wang .Preparation and characterizations of a new PS/TiO_2 hybrid membranes by sol-gel process[J].Polymer: The International Journal for the Science and Technology of Polymers,2006(8):2683-2688. |
| [13] | 李健生,王连军,梁祎,王慧雅,孙秀云,刘晓东.纳米氧化物粒子对PVDF中空纤维膜结构与性能的影响[J].环境科学,2005(03):126-129. |
| [14] | Bae TH;Tak TM .Effect of TiO2 nanoparticles on fouling mitigation of ultrafiltration membranes for activated sludge filtration[J].Journal of Membrane Science,2005(1/2):1-8. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%