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TPEE@LDH复合纳米纤维的制备及其除Cr(Ⅵ)性能的研究 被引量:1

Preparation of TPEE@LDH composite nanofibrous membrane and its Cr(Ⅵ)-removal performance
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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.
出处 《化工新型材料》 CAS CSCD 北大核心 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)
关键词 静电纺丝 纳米纤维 水滑石 六价铬 electrospinning, nanofiber, LDH, Cr( VI )
作者简介 贺欢(1990-)。男,硕士研究生,研究方向为纳米技术与纤维材料在水处理方面的应用。 联系人:李从举(1972-),男,博士研究生导师,教授,研究方向为纳米技术与纤维材料。
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参考文献9

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