TPEE@LDH复合纳米纤维的制备及其除Cr(Ⅵ)性能的研究  

Preparation of TPEE@LDH composite nanofibrous membrane and its Cr(Ⅵ)-removal performance

作　　者：贺欢[1,2] 王娇娜[1,2] 李秀艳[1,2] 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》2016年第8期90-92,95,共4页New Chemical Materials

基　　金：国家自然科学基金项目(21274006;51503005);北京市科技北京百名领军人才工程(LJ201614);北京市百千万人才工程资助项目(110403000402);北京市属高等学校高层次人才引进与培养计划项目-北京市长城学者培育计划(CIT&TCD20150306);北京市属高校创新能力提升计划项目(TJSHG201310012021);北京服装学院创新团队与优秀人才选拔与培养计划项目(2014AL-68);北京市服装材料研究开发与评价重点实验室开放课题(2015ZK-02)

摘　　要：采用高压静电纺丝法制备热塑性聚酯弹性体（TPEE）纳米纤维膜,再通过水热法将水滑石（LDH）负载在纳米纤维表面,制备出TPEE@LDH复合纳米纤维膜,并对其进行红外光谱（FT-IR）、能谱（EDX）、X射线衍射（XRD）、扫描电镜（SEM）表征,结果表明：水热时间8h,温度100℃时,LDH成功负载在了纳米纤维膜表面,并生成片状的LDH。再用电感耦合等离子体测试（ICP-AES）对所制备的TPEE@LDH复合纳米纤维膜进行了除铬实验,结果表明：当Mg/Al的摩尔比为2、pH=2~3、吸附时间在8d时,除铬效果可以达到最大的44mg/L。所以,TPEE@LDH纳米纤维膜相比较传统吸附剂,具有除铬效果好、易分离的优点,为当今日益严重的水体Cr（VI）问题提供了一个非常好的解决方案。TPEE nanofibrous membrane was first fabricated by electrospinning technique and then TPEE@ LDH composite nanofibrous membrane was synthesized by hydrothermal method of a mix of LDH precursor and TPEE nanofi- brous membrane. Scanning electron microscopy（SEM）, fourier transform infrared spectroscopy（FT-IR）, energy dispersive detector（EDX） ,X-ray diffraction（XRD） characterized to confirm the formation of LDH on the TPEE nanofibers. The SEM result revealed that the nanofiber had a better morphology. FT-IR,EDX and XRD proved that the surface of nanofiber was LDH. Cr-removal experiment showed that the nanofiber exhibited outstanding Cr-removal performance, the best Mg/A1 molar ratio was 2 ,the optimal pH of Cr-removal was 2~3 ,the minimum time of absorption was 8 days. Therefore,the work not only provided a highly efficient adsorbent to remove hexavalent chromium from waste water,but also offered a simple and efficient new method for environmental restoration field.

关 键 词：静电纺丝 纳米纤维 水滑石 六价铬 

分 类 号：TQ342.94[化学工程—化纤工业]