High‐Efficiency Water‐Transport Channels using the Synergistic Effect of a Hydrophilic Polymer and Graphene Oxide Laminates

Many materials with varied characteristics have been used for water purification and separation applications. Recently discovered graphene oxide (GO), a two-dimensional derivative of graphene has been considered as a promising membrane material for water purification due to its excellent hydrophilicity, high water permeability, and excellent ionic/molecular separation properties. This review is focussed on the possible versatile applicability of GO membranes. It is also known that selective reduction of GO results in membranes with a pore size of $0.35 nm, ideally suited for desalination applications. This article presents the applicability of graphene-based membranes for multiple separation applications. This is indeed the first review article outlining a comparison of GO and r-GO membranes and discussing the suitability for applications based on the porosity of the membranes.

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“…As a result, Huang et al 107 obtained a high purity water permeate content of over 99.4% with a super high water ux of over 10 000 g m À2 h…”

mentioning

confidence: 99%

Separation and purification using GO and r-GO membranes

et al. 2018

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“…Then, they designed ab io-inspired membrane that combinedawater-capturing polymeric layer (chitosan) with GO laminates to achieve high-performance water permeation ( Figure 5). [57] Remarkably,the as-obtained membrane presented highly selective water permeation with an outstanding water flux of over 10 000 gm À2 h À1 ,w hich is superior to the performance of other reported membranes for n-butanol dehydration. Moreover,t hrough well-controlled thermalo rc hemical treatments, the interlayer spacing can be regulated effectively.…”

Section: Unimpeded Water Transportmentioning

confidence: 80%

“…verified the water sorption process as the control step, meaning that the 2 D channels may not be fully utilized during the separation if the water adsorption on the GO surface is insufficient. Then, they designed a bio‐inspired membrane that combined a water‐capturing polymeric layer (chitosan) with GO laminates to achieve high‐performance water permeation (Figure ) . Remarkably, the as‐obtained membrane presented highly selective water permeation with an outstanding water flux of over 10 000 g m −2 h −1 , which is superior to the performance of other reported membranes for n‐butanol dehydration.…”

Section: Unimpeded Water Transportmentioning

confidence: 99%

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Water Adsorption and Transport on Oxidized Two‐Dimensional Carbon Materials

Yan

Xue

et al. 2019

Chemistry A European J

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Studies on the adsorption and transport of water molecules with oxidized two‐dimensional (2 D) carbon materials have attracted increasing interest owing to their wide range of applications, such as sensing, energy conversion, and membrane separation. In this contribution, the interaction between water molecules and oxidized 2 D carbon materials (i.e., graphene oxide and graphdiyne oxide) is discussed, the influence of water adsorption and transport on the physicochemical properties of 2 D carbon materials is presented, and the recent progress on oxidized 2 D carbon material‐based proton conduction, electricity generation, water transport, and humidity sensing is highlighted. The opportunities and challenges in these research fields are discussed, especially the structural stability and chemical modification of 2 D carbon materials.

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“…[8,123,[285][286][287][288][289][290][291][292][293][294] This can be achieved via LbL assembly or via dynamic compositing. [8,123,[285][286][287][288][289][290][291][292][293][294] This can be achieved via LbL assembly or via dynamic compositing.…”

Section: Lbl Assembly and Dynamic Composite Membranesmentioning

confidence: 99%

The Key Role of Modifications in Biointerfaces toward Rendering Antibacterial and Antifouling Properties in Polymeric Membranes for Water Remediation: A Critical Assessment

Samantaray

Madras

Bose

2019

Advanced Sustainable Systems

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Safe drinking water for all is a major challenge and needs critical attention, as freshwater aquifers are rapidly declining. A strategy based on addressing scarcity through membrane‐based purification and desalination can be an immediate and robust solution. The current scientific advances toward tailoring the structure and chemical properties of existing membrane materials have enabled key insights leading to new water purification alternatives. In the first part of the article, the key requirements for water decontamination addressed through state‐of‐the‐art literature on membranes are discussed. In the next part, the specific membrane modification strategies to impede bacterial growth and enhance fouling resistance are discussed, bringing in the underlying mechanisms. Finally, promising next‐generation separation techniques that are inspired by nature, inorganic and carbonaceous nanomaterial‐based membranes, layer‐by‐layer assembly, and dynamic composite membranes, are highlighted. This perspective article will help guide researchers working in this field from both industrial and academic standpoints, especially where the research is focused toward developing strategies to modify the existing solution besides finding alternative and sustainable new materials.

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High‐Efficiency Water‐Transport Channels using the Synergistic Effect of a Hydrophilic Polymer and Graphene Oxide Laminates

Cited by 192 publications

References 49 publications

Separation and purification using GO and r-GO membranes

Separation and purification using GO and r-GO membranes

Water Adsorption and Transport on Oxidized Two‐Dimensional Carbon Materials

The Key Role of Modifications in Biointerfaces toward Rendering Antibacterial and Antifouling Properties in Polymeric Membranes for Water Remediation: A Critical Assessment

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