Functional graphene nanosheets: The next generation membranes for water desalination
Functional graphene nanosheets: The next generation membranes for water desalination
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DOI：
10.1016/j.desal.2014.10.022
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发表时间：
2015-01-15
期刊：
影响因子：
9.9
通讯作者：
Khraisheh, Marwan
中科院分区：
文献类型：
--
作者：
Mahmoud, Khaled A.;Mansoor, Bilal;Khraisheh, Marwan
膜脱盐和水净化技术已成为确保地球仪淡水资源的重要节能手段。在新膜系统的设计和开发中的重大最新进展之一是石墨烯的使用。石墨烯已经提供了一类新型的机械坚固的、稳定的、高通量的、高选择性的和抗结垢的分离膜，其提供了推进水脱盐技术的机会。纳米多孔石墨烯（NPG）和氧化石墨烯（GO）膜的简易合成为理想的下一代膜打开了大门，作为用于水净化应用的长期存在的薄膜复合聚酰胺膜的成本效益和可持续替代品。在这篇综述中，我们重点介绍了NPG和GO膜的结构和制备。我们还讨论了最近的实验，计算机模拟和理论模型，解决独特的机械性能，离子选择性，和可能的传输机制，通过NPG和GO膜。我们将专注于氧化石墨烯膜的制备和功能化方案。特别强调的是NPG和GO改性的膜的可渗透性。我们相信这一审查将为NPG和GO在水淡化和处理中的新创新和应用开辟新的途径。(C)2014爱思唯尔有限公司版权所有。
Membrane desalination and water purification technologies have become important energy-efficient means to secure fresh water resources around the globe. Among the significant recent advancements in the design and development of new membrane systems is the use of graphenes. Graphenes have offered a novel class of mechanically robust, ultrathin, high-flux, high selectivity, and fouling resistant separation membranes that provide opportunities to advance water desalination technologies. The facile synthesis of nanoporous graphene (NPG) and graphene oxide (GO) membranes opens the door for ideal next-generation membranes as cost effective and sustainable alternative to the long-existing thin-film composite polyamide membranes for water purification applications. In this review, we highlight the structure and preparation of NPG and GO membranes. We also discuss the recent experiments, computer simulations and theoretical models, addressing the unique mechanical properties, ion selectivity, and possible transport mechanisms through NPG and GO membranes. We will focus on the fabrication and functionalization schemes of graphene oxide membranes. Particular emphasis is on the antifouling properties of the NPG and GO modified membranes. We believe this review will open new avenues for new innovations and applications of NPG and GO in water desalination and treatment. (C) 2014 Elsevier B.V. All rights reserved.