Ion‐Transport Experiments to Probe the Nanostructure of Graphene/Polymer Membranes,Small Methods

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Ion‐Transport Experiments to Probe the Nanostructure of Graphene/Polymer Membranes
Small Methods ( IF 10.7 ) Pub Date : 2018-07-25 , DOI: 10.1002/smtd.201800187
Mengyang Zhang ₁ , Chi Cheng _{1,

2} , George P. Simon ₁ , Dan Li _{1,

2}

Affiliation

Graphene/polymer layered nanocomposites are studied extensively for their unique two‐dimensional (2D) layered nanoporous structures and interesting permeation properties with regard to ionic species, and show great potential for applications in many fields. Structural characterization is essential to the establishment of structure–properties relationships, which however remains challenging due to the complex, nanoporous texture rising from graphene alignment in graphene/polymer membrane materials. Here, a method is proposed that utilizes ions as probes for gaining structural information of the layered nanoporous structure. The results show that the subtle structural variations caused by the small change of interfacial interactions between the polymer and graphene materials during solution processing can be clearly revealed. The ion‐transport experiments demonstrated in this work can be used as a set of tools for quick quality control and monitoring of production of graphene/polymer nanocomposites and nanoporous composites assembled with other 2D materials.

中文翻译：

离子传输实验以探测石墨烯/聚合物膜的纳米结构

石墨烯/聚合物层状纳米复合材料因其独特的二维（2D）层状纳米多孔结构和令人关注的离子种类渗透性能而得到了广泛的研究，在许多领域都有广阔的应用前景。结构表征对于建立结构-性能关系至关重要，但是由于石墨烯/聚合物膜材料中的石墨烯排列而产生的复杂的纳米多孔质感，仍然具有挑战性。在此，提出了一种利用离子作为探针以获得层状纳米多孔结构的结构信息的方法。结果表明，在溶液加工过程中，聚合物与石墨烯材料之间的界面相互作用的微小变化所引起的细微结构变化可以清楚地揭示出来。

更新日期：2018-07-25

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