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Functionalized carbon nanotube (CNT) membrane: progress and challenges

机译：官能化碳纳米管（CNT）膜：进展和挑战

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摘要

The role of carbon nanotube (CNT) as filler in a membrane matrix became popular recently. CNT is believed to solve the trade-off issue between permeability and selectivity, and also fouling problems in membrane filtration applications. Their fullerene form is a key point to provide a higher pore size on membrane surface as well as empty space called porosity in membrane structures. However, the hydrophobicity characteristic of CNT has made it difficult to distribute and it tends to agglomerate with each other which leads to a decrease in the dispersion ability in a solvent and, in the same way, a decline in the compatibility of a membrane structure. Functionalization of CNT is expected to solve those problems. Moreover, membrane hydrophilicity, which is provided by the existence of hydrophilic functionalized CNT, is aimed to achieve the anti trade-off between permeability and selectivity based on a electrostatic repulsion concept. By an electrostatic repulsion process, a pollutant will be repelled from attaching to a membrane surface while water will be strongly attracted and be transported through the membrane. Therefore, various approaches have been investigated to functionalize CNT for achieving a high dispersion of CNT as well as high compatibility between CNT and a polymer matrix which lead to improvement of modified membrane properties and performances. This paper reviews the progress of CNT functionalization applied in membrane filtration during the years 2006 up to 2016. The influence of functionalized CNT in improving membrane properties as well as membrane performances is specifically highlighted.
机译：碳纳米管（CNT）作为膜基质中填料的作用最近变得流行。据信CNT解决渗透性和选择性之间的权衡问题，以及膜过滤应用中的污染问题。它们的富勒烯形式是在膜表面上提供更高的孔径以及称为膜结构孔隙率的空间的关键点。然而，CNT的疏水性特征使得难以分配并且它倾向于彼此凝聚，这导致溶剂中的分散能力的降低，并且以相同的方式降低膜结构的相容性下降。预计CNT的功能化将解决这些问题。此外，由亲水性官能化CNT的存在提供的膜亲水性，旨在基于静电排斥概念来实现渗透性和选择性之间的抗衡权。通过静电排斥方法，污染物将被排斥到膜表面上，而水将被强烈地吸引并通过膜运输。因此，已经研究了各种方法以使CNT的CNT用于实现CNT的高分散体以及CNT和聚合物基质之间的高相容性，这导致改善改性膜性能和性能。本文综述了2006年期间膜过滤中的CNT官能化的进展，特别突出了官能化CNT在改善膜性能下的影响以及膜性能。

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  • 来源
    《RSC Advances》 |2017年第81期|共24页
  • 作者

    Sianipar Merry; Kim Seung Hyun; Khoiruddin; Iskandar Ferry; Wenten I. Gede;

  • 作者单位

    Inst Teknol Bandung Res Ctr Nanosci &

    Nanotechnol Jalan Ganesha 10 Bandung 40132 Indonesia;

    Kyungnam Univ Civil Engn Dept 449 Woryeong Dong Changwon Si Gyeongsangnam D South Korea;

    ITB Chem Engn Dept Jalan Ganesha 10 Bandung 40132 Indonesia;

    Inst Teknol Bandung Res Ctr Nanosci &

    Nanotechnol Jalan Ganesha 10 Bandung 40132 Indonesia;

    Inst Teknol Bandung Res Ctr Nanosci &

    Nanotechnol Jalan Ganesha 10 Bandung 40132 Indonesia;

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