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首页> 外文期刊>RSC Advances >Graphene oxide polypiperazine-amide nanofiltration membrane for improving flux and anti-fouling in water purification
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Graphene oxide polypiperazine-amide nanofiltration membrane for improving flux and anti-fouling in water purification

机译：石墨烯氧化哒哒哒萘酰胺纳米过滤膜，用于改善水净化中的通量和防污染

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摘要

In this study, a facile polypiperazine-amide (PPA) composite nanofiltration (NF) membrane with nanomaterial graphene oxide (GO) incorporated into a polyamide (PA) layer for high water flux and anti-fouling was fabricated by interfacial polymerization (IP). The chemical composition, structure and surface properties of the fabricated PPA/GO and PPA composite NF membranes were characterized by FTIR, XPS, FE-SEM, AFM, zeta-potential and contact angle measurements. The separation properties and anti-fouling ability of the PPA/GO NF membrane were investigated and discussed. The experimental results indicated that the water flux of the PPA/GO (300 mg L-1 GO) membrane increased from 66 (L m(-2) h(-1)) to 87.6 (L m(-2) h(-1)) under the operating pressure of 0.6 MPa, almost 1.4 times that of the PPA (without GO) membrane. However, the high salt rejection was still retained in the order of Na2SO4 (98.2%) > MgSO4 (96.5%) > NaCl (56.8%) > MgCl2 (50.5%). An anti-fouling test revealed that the PPA/GO membrane had excellent antifouling properties due to the enhanced hydrophilicity and decreased roughness induced by the GO nanosheets. Thus, the PPA/GO membrane can be efficiently and endurably applied in water purification.
机译：在本研究中，通过界面聚合（IP）制造了掺入高水通量和防污染中的聚酰胺（PA）层中的纳米材料氧化物（PPA）复合纳米滤膜（PPA）复合纳米滤膜（NF）复合纳米滤膜（GO）。通过FTIR，XPS，Fe-SEM，AFM，Zeta - 电位和接触角测量来表征制造的PPA / GO和PPA复合NF膜的化学成分，结构和表面性质。研究并讨论了PPA / GO NF膜的分离性能和抗结垢能力。实验结果表明，PPA /去（300mg L-1）膜的水通量从66（L m（-2）h（-1））增加到87.6（l m（-2）h（ - 1））在0.6MPa的工作压力下，PPA（无去）膜的几乎1.4倍。然而，高盐排斥仍然按Na 2 SO 4（98.2％）> MgSO 4（96.5％）> NaCl（56.8％）> MgCl 2（50.5％）的顺序保留。防污测试显示，由于增强的亲水性和GO纳米片诱导的粗糙度降低，PPA / GO膜具有优异的防污性能。因此，PPA /去膜可以有效且可耐用地在水净化中施加。

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  • 来源
    《RSC Advances》 |2016年第85期|共12页
  • 作者

    Wang Jin; Zhao Changwei; Wang Tao; Wu Zhen; Li Xiang; Li Jiding;

  • 作者单位

    Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China;

    Chinese Acad Sci Ecoenvironm Sci Res Ctr Beijing 100085 Peoples R China;

    Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China;

    Ordos Redbud Innovat Inst Ordos 017000 Peoples R China;

    Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China;

    Tsinghua Univ Dept Chem Engn State Key Lab Chem Engn Beijing 100084 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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