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首页> 外文期刊>Environmental Science & Technology >A Critical Review on Thin-Film Nanocomposite Membranes with Interlayered Structure: Mechanisms, Recent Developments, and Environmental Applications
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A Critical Review on Thin-Film Nanocomposite Membranes with Interlayered Structure: Mechanisms, Recent Developments, and Environmental Applications

机译：薄膜纳米复合膜与层间结构的关键评价：机制，最近的发展和环境应用

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摘要

The separation properties of polyamide reverse osmosis and nanofiltration membranes, widely applied for desalination and water reuse, are constrained by the permeability-selectivity upper bound. Although thin-film nanocomposite (TFN) membranes incorporating nanomaterials exhibit enhanced water permeance, their rejection is only moderately improved or even impaired due to agglomeration of nanomaterials and formation of defects. A novel type of TFN membranes featuring an interlayer of nanomaterials (TFNi) has emerged in recent years. These novel TFNi membranes show extraordinary improvement in water flux (e.g., up to an order of magnitude enhancement) along with better selectivity. Such enhancements can be achieved by a wide selection of nanomaterials, ranging from nanoparticles, one-/ two-dimensional materials, to interfacial coatings. The use of nanostructured interlayers not only improves the formation of polyamide rejection layers but also provides an optimized water transport path, which enables TFNi membranes to potentially overcome the longstanding trade-off between membrane permeability and selectivity. Furthermore, TFNi membranes can potentially enhance the removal of heavy metals and micropollutants, which is critical for many environmental applications. This review critically examines the recent developments of TFNi membranes and discusses the underlying mechanisms and design criteria. Their potential environmental applications are also highlighted.
机译：聚酰胺反渗透和纳滤膜的分离性能广泛应用于脱盐和水再利用，受到渗透性选择性上染料的约束。虽然掺入纳米材料的薄膜纳米复合材料（TFN）膜表现出增强的水渗透性，但它们的排斥仅受到纳米材料附聚和缺陷的凝聚而中度改善或甚至受损。近年来出现了一种具有纳米材料中间层的新型TFN膜，其具有纳米材料（TFNI）的中间层。这些新颖的TFNI膜在水助焊剂（例如，最大增加的数量级增强）中表现出非凡的改善以及更好的选择性。这种增强可以通过各种纳米材料来实现，从纳米颗粒，单维材料，界面涂层范围内。纳米结构中间层的使用不仅改善了聚酰胺排斥层的形成，而且还提供了优化的水运输路径，这使得TFNI膜能够在膜渗透性和选择性之间潜在地克服长期的折衷。此外，TFNI膜可以潜在地增强重质金属和微污染物的去除，这对于许多环境应用至关重要。本综述批判性地研究了TFNI膜的最新发展，并讨论了潜在机制和设计标准。他们的潜在环境应用也突出显示。

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  • 来源
    《Environmental Science & Technology》 |2020年第24期|15563-15583|共21页
  • 作者

    Zhe Yang; Peng-Fei Sun; Xianhui Li; Bowen Gan; Li Wang; Xiaoxiao Song; Hee-Deung Park; Chuyang Y. Tang;

  • 作者单位

    Department of Civil Engineering The University of Hong Kong Pokjulam Hong Kong SAR P. R China;

    Department of Civil Engineering The University of Hong Kong Pokfulam Hong Kong SAR P. R. China School of Civil Environmental and Architectural Engineering Korea University Seoul 02841 South Korea;

    Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education Institute of Environmental and Ecological Engineering Guangdong University oj Technology Guangzhou 510006 China;

    Department of Civil Engineering The University of Hong Kong Pokjulam Hong Kong Centre for Membrane and Water Science & Technology Ocean College Zhejiang University of Technology Hangzhou 310014 P. R. China;

    Department of Civil Engineering The University of Hong Kong Pokfulam Hong Kong;

    Centre for Membrane and Water Science & Technology Ocean College Zhejiang University of Technology Hangzhou 310014 P. R. China;

    School of Civil Environmental and Architectural Engineering Korea University Seoul 02841 South Korea;

    Department of Civil Engineering The University of Hong Kong Pokfulam Hong Kong SAR P. R. China;

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