Water-selective hybrid membranes with improved interfacial compatibility from mussel-inspired dopamine-modified alginate and covalent organic frameworks

Hao Yang; Hong Wu; Fusheng Pan; Meidi Wang; Zhongyi Jiang; Qifan Cheng; Cheng Huang

doi:10.1016/j.cjche.2019.03.007

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Water-selective hybrid membranes with improved interfacial compatibility from mussel-inspired dopamine-modified alginate and covalent organic frameworks

Separation Science and Engineering | Updated：2026-01-06

- Water-selective hybrid membranes with improved interfacial compatibility from mussel-inspired dopamine-modified alginate and covalent organic frameworks
- Chinese Journal of Chemical Engineering Vol. 28, Issue 1, Pages: 90-97(2020)
- Affiliations：
  
  1. Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin,China,300072
  3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin University,Tianjin,China,300072
  4. State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.03.007
  CLC：
- Published：2020
- Accepted：
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Hao Yang, Hong Wu, Fusheng Pan, Meidi Wang, Zhongyi Jiang, Qifan Cheng, Cheng Huang. Water-selective hybrid membranes with improved interfacial compatibility from mussel-inspired dopamine-modified alginate and covalent organic frameworks[J]. Chinese Journal of Chemical Engineering, 2020, 28(1): 90-97.
DOI：

Hao Yang, Hong Wu, Fusheng Pan, Meidi Wang, Zhongyi Jiang, Qifan Cheng, Cheng Huang. Water-selective hybrid membranes with improved interfacial compatibility from mussel-inspired dopamine-modified alginate and covalent organic frameworks[J]. Chinese Journal of Chemical Engineering, 2020, 28(1): 90-97. DOI： 10.1016/j.cjche.2019.03.007.

摘要

Abstract

Hybrid membranes combining the merits of both polymer matrices and fillers have drawn extensive attention. The rational design of polymer-filler interface in hybrid membranes is vitally important for reducing the occurrence of void defects. Herein

imine-type covalent organic frameworks (COFs) were selected as the fillers due to their totally organic nature and multi-functionalities. Mussel-inspired dopamine-modified sodium alginate (AlgDA) was synthesized as the polymer matrix. The dopamine modification significantly improves the AlgDA-COF compatibility

which enhances the COF content up to 50 wt% in the hybrid membranes. The improved interfacial compatibility enhances the membrane separation selectivity. Accordingly

when utilized for dehydration of ethanol/water mixed solution (water concentration of 10 wt%)

the hybrid membrane reveals high water concentration of ~98.7 wt% in permeate

and stable permeation flux larger than 1500 g·m

-2

·h

-1

. This work might afford useful insights for fabricating hybrid membranes with high separation selectivity by optimizing the polymer-filler interface. Keywords:Alginate Dopamine

Covalent organic framework Membrane

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