Volume 64, Issue 24 e202423073
Research Article

High-Efficiency Ion Transport in Ultrathin 3D Covalent Organic Framework Nanofluidics

Haoyang Ling

Haoyang Ling

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Qingchen Wang

Qingchen Wang

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Zidi Yan

Zidi Yan

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Xuanze Li

Xuanze Li

Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

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Kehan Zou

Kehan Zou

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Yaoxu He

Yaoxu He

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Ke Li

Ke Li

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Yanglansen Cui

Yanglansen Cui

State Key Laboratory of Bioinspired Interfacial Materials Science,Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123 P.R. China

University of Science and Technology of China, Hefei, Anhui, 230026 P.R. China

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Tianchi Liu

Tianchi Liu

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

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Weipeng Chen

Weipeng Chen

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

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Huaqing Du

Huaqing Du

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Yang Liu

Yang Liu

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

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Weiwen Xin

Corresponding Author

Weiwen Xin

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

E-mail: [email protected]; [email protected]; [email protected]

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Xiang-Yu Kong

Corresponding Author

Xiang-Yu Kong

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

State Key Laboratory of Bioinspired Interfacial Materials Science,Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

University of Science and Technology of China, Hefei, Anhui, 230026 P.R. China

E-mail: [email protected]; [email protected]; [email protected]

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Lei Jiang

Lei Jiang

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

State Key Laboratory of Bioinspired Interfacial Materials Science,Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

University of Science and Technology of China, Hefei, Anhui, 230026 P.R. China

Institute for Biomedical Materials & Devices, University of Technology Sydney, Sydney, NSW, 2007 Australia

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Liping Wen

Corresponding Author

Liping Wen

Laboratory of Bio-inspired Smart Interface Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 P.R. China

State Key Laboratory of Bioinspired Interfacial Materials Science,Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou, Jiangsu, 215123 P.R. China

School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049 P.R. China

University of Science and Technology of China, Hefei, Anhui, 230026 P.R. China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 08 April 2025
Citations: 1

Graphical Abstract

This work well manipulates the ion transport in nanoconfined channels by employing 3D covalent organic frameworks (3D-COFs). Owing to their continuously interpenetrated pathways and well-ordered pore arrangements, 3D-COF nanofluidics demonstrated high ionic flux and cation selectivity. Toward osmotic energy applications, 3D-COF nanofluidics output an ultrahigh power density of 1238.2 W m−2 under a 500-fold salinity gradient.

Abstract

High-efficiency ion transport is essential for both biological and nonbiological processes, including the regulation of cell homeostasis, energy conversion, and mass transfer in chemical industry. Nanofluidic channels are considered ideal platforms for delicate control of ion transport in their unique nanoconfinement, yet currently reported 1D and 2D nanofluidics are subjected to elevated transport resistance due to discontinuous and random channels. Here, we engineer ultrathin, 3D covalent organic framework (3D-COF) nanofluidics featuring continuously interpenetrated pathways and well-ordered pore arrangements, demonstrating superior ion conductance. The energy barrier for ion transport across 3D-COF nanofluidics is exceptionally low, suggesting ultrafast and low-resistance ion movements. Theoretical calculations indicate that 3D-COF nanofluidics facilitate group adsorption to anions, leading to high energy barriers for anion mobility, thus enhancing ion selectivity and high-throughput cation transport. In osmotic energy applications, 3D-COF nanofluidics achieve a power density of 217.7 W m−2 with artificial seawater and river water, potentially scalable to 1238.2 W m−2 under a 500-fold salinity gradient. The proposed 3D-COF nanofluidics offer new avenues for desalination and ion/molecular separation.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that supports the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.