Soft Particles Enable Fast and Selective Water Transport through Graphene Oxide Membranes.,Nano Letters

当前位置： X-MOL 学术 › Nano Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Soft Particles Enable Fast and Selective Water Transport through Graphene Oxide Membranes.
Nano Letters ( IF 9.6 ) Pub Date : 2020-09-02 , DOI: 10.1021/acs.nanolett.0c02724
Wenbin Zhang ₁ , Mengqi Shi ₁ , Zhongxuan Heng ₁ , Weiming Zhang _{1,

2} , Bingcai Pan _{1,

2}

Affiliation

The intercalation strategy is successfully applied in tuning the interlayer distance of 2D membranes for efficient desalination and ion sieving. However, it is difficult to pursue a intercalant that is few nanometers in size and suitable for further chemical modification . Here, for the first time, we report the intercalation of soft particles−polyacrylonitrile gel particles (PAN GPs) inside the graphene oxide (GO) membranes, which allows for a tunable interlayer distance via the deformation of soft particles. Furthermore, the base-induced hydrophobic/hydrophilic structure of PAN GPs facilitates the water diffusion through the GO membrane. A fast and selective water permeation was observed through separation Cu-EDTA^2–from water, with the permeance of 4–13 times higher than the reported 2D membranes. Intercalation of soft particles represents a promising strategy to fabricate high-performance 2D membranes.

中文翻译：

软颗粒使水能够通过氧化石墨烯膜进行快速，选择性的水传输。

嵌入策略已成功应用于调整2D膜的层间距离，以实现高效脱盐和离子筛分。然而，难以追求尺寸为几纳米并且适合于进一步化学修饰的嵌入剂。在这里，我们首次报道了在氧化石墨烯（GO）膜内插入软颗粒-聚丙烯腈凝胶颗粒（PAN GPs），通过软颗粒的变形可调节层间距离。此外，PAN GPs的碱基诱导的疏水/亲水结构有助于水通过GO膜扩散。通过分离Cu-EDTA ^2–，观察到了快速而选择性的水渗透水中的渗透率比报道的二维膜高4-13倍。插入软颗粒代表了制造高性能2D膜的有前途的策略。

更新日期：2020-10-15

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11