CIESC Journal ›› 2018, Vol. 69 ›› Issue (1): 435-445.DOI: 10.11949/j.issn.0438-1157.20171091

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Preparation of thin-film composite nanofiltration membranes with amino-functionalized graphene oxide by interfacial polymerization

ZHANG Runnan1,2, LI Yafei1,2, SU Yanlei1,2, JIANG Zhongyi1,2   

  1. 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China
  • Received:2017-08-11 Revised:2017-11-22 Online:2018-01-05 Published:2018-01-05
  • Contact: 10.11949/j.issn.0438-1157.20171091
  • Supported by:

    supported by the National Key Research and Development Program of China (2016YFB0600503).

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. 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
  • 通讯作者: 姜忠义
  • 基金资助:

    国家重点研发计划项目(2016YFB0600503)。

Abstract:

A series of thin-film composite (TFC) nanofiltration (NF) membranes were prepared by interfacial polymerization, using amino-functionalized graphene oxide (NGO) as the aqueous monomer. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), scanning electron microscope (SEM) and atomic force microscopy (AFM) were applied to measure the chemical compositions and morphologies of the prepared NGO and TFC NF membranes. The effect of NGO and trimesoyl chloride (TMC) concentrations on the separation performance of the TFC NF membranes was investigated systematically. The TFC NF membrane exhibited a high flux of 27.8 L·m-2·h-1 under a relatively low operation pressure (0.2 MPa) and an excellent dye/salt separation performance with high rejections for organic dyes (methyl orange of 74.8%, orange G Ⅱ of 96.0%, Congo red of 98.5% and methyl blue of 99%) and low rejections for inorganic salts (Na2SO4 of 21.4%, MgSO4 of 10.7%, NaCl of 5.3% and MgCl2 of 1.5%). In addition, the TFC NF membrane showed good long term operational stability as well as a satisfying antifouling performance against bovine serum albumin (BSA).

Key words: amino-functionalized graphene oxide, interfacial polymerization, membrane, nanofiltration, preparation

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%,MgSO4截留率10.7%,NaCl截留率5.3%,MgCl2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

CLC Number: