MWNTs/TiO_2/聚酯功能复合膜吸附及其净化性能  

MWNTs/TiO_2 composite functional membranes and their adsorption properties

作　　者：柳丽芬[1] 郑国华[1] 杨凤林[1] 

机构地区：[1]大连理工大学环境生命学院,教育部工业生态与环境工程重点实验室,辽宁大连116023

出　　处：《中国环境科学》2009年第2期213-218,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(20477006);辽宁省自然科学基金(20052182)

摘　　要：以聚酯工业滤布为基膜,采用溶胶凝胶和浸渍方法制备了具有吸附-光催化功能的多壁碳纳米管(MWNTs)/TiO2涂层的复合膜,该复合膜对模拟水样低浓度(10mg/L)的双酚A具有较高吸附性能.随着复合膜上负载二氧化钛中的MWNTs的比例(17.6%,29.9%,和46.0%)增加,吸附去除率显著提高;吸附饱和的复合膜上的污染物双酚A可通过20W紫外灯(λ=254nm)照射Fenton氧化反应去除.吸附实验和HPLC分析表明,除了超声处理会引起浸渍负载的材料脱落外,复合膜吸附性能恢复较好.Series of composite functional membranes, containing adsorptive multi-walled carbon nanotubes（MWNTs）, and photocatalytic TiO2, based on polyethylene （PET） filter cloth, were prepared by using a sol-gel and dip-coating method. The membrane could remove low concentration （10mg/L） BPA （bisphenol A） efficiently from simulate polluted water sample. With the proportional increase of MWNTs to MWNTs＋TiO2 （17.6%, 29.9%, 46.0%）, removal rate of BPA increased accordingly. The adsorbed BPA on the saturated membrane could be removed by 2h （20W 254nm） UV-Fenton oxidation reaction. Repeated adsorption and HPLC analysis proved that the adsorption capacity of the studied membrane could be regenerated successfully, despite the detachment of MWNTs/TiO2 occurred when ultrasonically treated.

关 键 词：复合膜 双酚A(BPA) 吸附性能 

分 类 号：X703.3[环境科学与工程—环境工程] TQ028.8[化学工程]