Volume 21, Issue 3 2408695
Research Article

Cellulose Nanocrystal Composite Membrane Enhanced with In Situ Grown Metal–Organic Frameworks for Osmotic Energy Conversion

Xiuxiu Wang

Xiuxiu Wang

Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819 P. R. China

State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Minmin Li

Corresponding Author

Minmin Li

State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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

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Yuting Xiong

Yuting Xiong

State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Haijuan Qin

Haijuan Qin

Research Centre of Modern Analytical Technology, Tianjin University of Science & Technology, No. 29, 13th Avenue, TEDA, Tianjin, 300457 P. R. China

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Qiongya Li

Qiongya Li

State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Fusheng Zhang

Fusheng Zhang

State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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Yong-Liang Yu

Corresponding Author

Yong-Liang Yu

Department of Chemistry, College of Sciences, Northeastern University, Shenyang, 110819 P. R. China

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

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Guangyan Qing

Corresponding Author

Guangyan Qing

State Key Laboratory of Medical Proteomics, National Chromatographic R. & A. Center, CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023 P. R. China

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

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First published: 22 November 2024
Citations: 2

Abstract

Access to clean and renewable energy, osmotic energy from salinity gradient difference, for example, is central to the sustainability of human civilization. Despite numerous examples of nanofluidic membranes for osmotic energy conversion, one produced from abundant and renewable biomass resources remains largely unexplored. In this work, cotton-derived cellulose nanocrystals (CNCs) are employed to fabricate a membrane by self-assembly with polyvinyl alcohol (PVA) and subsequent in situ growth of metal–organic framework (MOF), UiO-66-(COOH)2, to provide an example. The composite membrane exhibits excellent mechanical strength and toughness due to the long chains and hydrogen bonding interactions of PVA. The incorporation of UiO-66-(COOH)2 endows the composite membrane with abundant nano- and subnano-sized ion transport channels, resulting in a 150% increase in ion conductance, while also providing superior cation selectivity through collaboration with the sulfated CNCs. The composite membrane with 27.4% MOF content can achieve an osmotic energy conversion performance of 5.10 W m−2 under a 50-fold KCl gradient condition and a monovalent cation selectivity of ≈16 for K+/Mg2+. This work presents a solution for harvesting renewable osmotic energy by constructing nanofluidic membranes using plentiful renewable biomass materials and a simple, low-emission fabrication procedure.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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