Abstract Membrane capacitive deionization (MCDI) is a technique that is derived from conventional capacitive deionization (CDI). Additional ion-exchange membranes are included in the MCDI cell to prevent ion-expulsion and improve cyclability. As it stands, MCDI represents the most feasible option for large scale desalination to take place. In this work, we investigate the desalination performance of a novel structured activated carbon material synthesized from the assembly of polyvinyl alcohol (PVA) on graphene oxide (GO). A hydrothermal treatment causes self-assembly of the PVA covered GO sheets and the product is a polymeric framework supported by reduced GO sheets. A further activation process by KOH produces the structured activated carbon (AC). These new structured ACs possess unique morphologies and exhibit high adsorption capacities (> 30 mg g− 1) which far surpass traditional ACs.

中文翻译：

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三维氧化石墨烯和聚乙烯醇复合材料作为结构化活性炭用于电容式脱盐

摘要 膜电容去离子（MCDI）是一种源自传统电容去离子（CDI）的技术。MCDI 池中包含额外的离子交换膜，以防止离子排出并提高可循环性。就目前而言，MCDI 代表了进行大规模海水淡化的最可行选择。在这项工作中，我们研究了由聚乙烯醇（PVA）在氧化石墨烯（GO）上组装合成的新型结构活性炭材料的脱盐性能。水热处理导致 PVA 覆盖的 GO 片材的自组装，产品是由还原的 GO 片材支撑的聚合物框架。KOH 的进一步活化过程产生结构化活性炭 (AC)。这些新的结构化活性炭具有独特的形态和高吸附能力（>