氨基化氧化石墨烯界面聚合制备超薄复合纳滤膜

张润楠1,2 李亚飞1,2 苏延磊1,2 姜忠义1,2

(1.天津大学化工学院, 天津 300072)
(2.天津化学化工协同创新中心, 天津 300072)

【摘要】采用氨基化氧化石墨烯 (NGO) 为界面聚合水相单体, 制备了超薄复合纳滤膜。研究采用傅里叶变换红外光谱 (FTIR) 、X射线光电子能谱 (XPS) 、透射电子显微镜 (TEM) 、扫描电子显微镜 (SEM) 、原子力显微镜 (AFM) 表征了NGO以及复合纳滤膜的化学组成和形貌。系统考察了水相单体浓度、有机相单体浓度对于制备的超薄复合纳滤膜性能的影响。该超薄复合膜在低压 (0.2 MPa) 下纯水通量可达27.8 L·m-2·h-1, 对小分子染料有较高的截留率 (甲基橙截留率74.8%, 橙黄钠截留率96.0%, 刚果红截留率98.5%, 甲基蓝截留率99%) , 对于无机盐的截留率较低 (Na2SO4截留率21.4%, Mg SO4截留率10.7%, Na Cl截留率5.3%, Mg Cl2截留率1.5%) , 展现出优异的染料/盐分离性能。同时制备的复合纳滤膜展现了较好的长周期稳定性以及抗污染特性。

【关键词】 氨基化氧化石墨烯; 界面聚合; 膜; 纳滤; 制备;

【DOI】

【基金资助】 国家重点研发计划项目 (2016YFB0600503) supported by the National Key Research and Development Program of China (2016YFB0600503)

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This Article

ISSN:0438-1157

CN: 11-1946/TQ

Vol 69, No. 01, Pages 435-445

January 2018

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Article Outline

摘要

  • 引言
  • 1 实验材料和方法
  • 2 实验结果与讨论
  • 3 结论
  • 符号说明
  • 参考文献