Ion and water transport properties of cation exchange membranes prepared by heavy-ion-track grafting technique
Ion and water transport properties of cation exchange membranes prepared by heavy-ion-track grafting technique
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DOI：
10.1080/01496395.2019.1648510
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发表时间：
2020-08
影响因子：
2.8
通讯作者：
S. Sawada;M. Goto;H. Koshikawa;A. Kitamura;Mitsuru Higa;T. Yamaki
中科院分区：
文献类型：
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作者：
S. Sawada;M. Goto;H. Koshikawa;A. Kitamura;Mitsuru Higa;T. Yamaki
摘要：对于高性能的盐水电渗析，阳离子交换膜（CEMs）是必需的，它可以主动运输Na+并限制水的渗透。在这项研究中，我们采用重离子轨道接枝技术制备了新型CEMs，并测量了它们的膜阻力和水渗透通量作为输运性质。所制备的纳米结构CEM比商用CEM具有更低的电阻和更低的水通量。钠离子通过其独特的一维离子通道（低阻力）有效运输，而由于CEMs的吸水率非常低，水的运输受到抑制。这些结果证明了这些纳米结构CEMs在实际盐水电渗析中应用的高潜力。
ABSTRACT For high-performance electrodialysis of saline water, cation exchange membranes (CEMs) that actively transport Na+ and restrict water permeation are required. In this study, we prepared novel CEMs by a heavy-ion-track grafting technique and measured their membrane resistance and water permeation flux as transport properties. The prepared nanostructured CEMs exhibited lower resistance and lower water flux than the commercial CEM. Na+ ions were efficiently transported through their unique one-dimensional ion channels (low resistance), while water transport was suppressed due to the very low water uptake of the CEMs. These results demonstrated the high potential of these nanostructured CEMs for use in practical saline water electrodialysis.