巯基修饰PVDF-SiO_2复合纳米纤维膜的制备及其在处理Cu^(2+)方面的应用  

Preparation of PVDF-SiO_2 composite nanofiber membranes with mercapto groups and their application in removal of Cu^(2+)

作　　者：贾彬彬[1,2] 王娇娜[1,2] 顾广东 李从举[1,2] 

机构地区：[1]北京服装学院材料科学与工程学院,北京100029 [2]北京市服装材料研究开发与评价重点实验室,北京100029

出　　处：《化工新型材料》2015年第9期128-130,133,共4页New Chemical Materials

基　　金：国家自然科学基金项目(21274006);北京服装学院科学研究项目一般科研项目(2012A-09);北京市优秀人才培养资助(2013D005001000003);北京服装学院科学研究青年创新基金(2014AL-21);北京服装学院创新团队与优秀人才选拔与培养计划项;北京服装学院2014年度研究生科研创新项目(X2014-091;X2014-083)

摘　　要：结合静电纺丝技术和凝胶-溶胶法制备了PVDF-SiO2复合纳米纤维膜,通过3-羟丙基三甲氧基硅烷进行巯基修饰,成功制备出具有多级结构的巯基修饰PVDF-SiO2复合纳米纤维膜。除Cu2+实验表明该复合纳米纤维膜对Cu2+的最佳吸附pH为2,吸附符合Langmuir吸附模型,用Langmuir吸附等温式计算得巯基修饰的PVDF-SiO2复合纳米纤维膜对Cu2+的最大吸附量达到145.56mg/g,同时,该复合纳米纤维膜容易在水体中取出,循环利用性能良好。因此,在去除重金属离子(Cu2+)方面具有很好的应用前景。PVDF SiO2 composite nanofibrous membrane was first fabricated by electrospinning technique combined with sol-gel method. And then, the membrane with mereapto groups were successfully prepared by the modification of 3- mercaptopropyl trimethoxysilane. The adsorption Cu^2＋ experiment indicated that the highest Cu^2＋ adsorption occured at the pH value of 2. The research of adsorption isotherm suggested that the adsorption of Cu^2＋ onto the membrane was followed the Langmuir adsorption and the Cu^2＋ adsorption capacity from water can be as high as 145.56mg/g. Meanwhile, the free standing membrane can be easily separated from liquid solutions and showed excellent cyclic utilization performance. There fore,such novel nanofibrous membrane can be potentially widely used in Cu^2＋ removal.

关 键 词：纳米纤维膜 巯基修饰 吸附 铜离子 

分 类 号：TQ342.94[化学工程—化纤工业] O647.3[理学—物理化学]