A nanofluidic ion regulation membrane with aligned cellulose nanofibers

Science Advances
Tian LiLiangbing Hu

Abstract

The advancement of nanofluidic applications will require the identification of materials with high-conductivity nanoscale channels that can be readily obtained at massive scale. Inspired by the transpiration in mesostructured trees, we report a nanofluidic membrane consisting of densely packed cellulose nanofibers directly derived from wood. Numerous nanochannels are produced among an expansive array of one-dimensional cellulose nanofibers. The abundant functional groups of cellulose enable facile tuning of the surface charge density via chemical modification. The nanofiber-nanofiber spacing can also be tuned from ~2 to ~20 nm by structural engineering. The surface-charge-governed ionic transport region shows a high ionic conductivity plateau of ~2 mS cm-1 (up to 10 mM). The nanofluidic membrane also exhibits excellent mechanical flexibility, demonstrating stable performance even when the membrane is folded 150°. Combining the inherent advantages of cellulose, this novel class of membrane offers an environmentally responsible strategy for flexible and printable nanofluidic applications.

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Citations

Jul 3, 2020·Proceedings of the National Academy of Sciences of the United States of America·Yunfei TengLiping Wen
Jun 14, 2020·Proceedings of the National Academy of Sciences of the United States of America·Mingchao ZhangYingying Zhang
Jun 10, 2020·Proceedings of the National Academy of Sciences of the United States of America·Zhen ZhangXinliang Feng
Oct 28, 2020·Advanced Materials·Chaoji Chen, Liangbing Hu
Jan 21, 2021·Advanced Materials·Qinqin XiaLiangbing Hu
Feb 17, 2021·Scientific Reports·Sungmin ParkSung Jae Kim
Mar 1, 2021·The Journal of Chemical Physics·Yoav Green
May 6, 2021·ACS Applied Materials & Interfaces·Nan ShengHuaping Wang
Jun 4, 2021·ACS Applied Materials & Interfaces·Ramadan Abu-Rjal, Yoav Green
Jul 16, 2021·ACS Applied Materials & Interfaces·Yuyu SuWeiwei Lei
Jul 19, 2021·Journal of Colloid and Interface Science·Q YangQ L Liu
Jul 17, 2021·ACS Nano·Gegu ChenLiangbing Hu
Oct 28, 2019·Journal of the American Chemical Society·Yubing ZhouLiangbing Hu
Aug 17, 2021·ACS Omega·Tukhar Jyoti KonchKalyan Raidongia
Aug 21, 2021·ACS Applied Materials & Interfaces·Phuoc H H DuongKatie D Li-Oakey
Mar 18, 2020·Analytical Chemistry·Si-Min LuYi-Tao Long
Feb 13, 2020·ACS Applied Materials & Interfaces·Xiaobing ZhouXu Deng
Sep 9, 2021·Small·Weiqing KongLiangbing Hu

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Methods Mentioned

BETA
x-ray scattering

Software Mentioned

ChemWorld

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