Rapid synthesis of charged covalent organic framework for sustainable reverse osmosis membranes

IF 8.3 1区 工程技术 Q1 ENGINEERING, CHEMICAL Desalination Pub Date : 2025-03-13 DOI:10.1016/j.desal.2025.118797
Umar H. Nuhu , Niaz Ali Khan , Ijaz Hussain , Mengying Long , Billel Salhi , Nadeem Baig , Ismail Abdulazeez , Khan Alam , Sikandar Khan , Muhammad Usman , Umer Zahid , Isam H. Aljundi
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引用次数: 0

Abstract

Introducing well-structured and selective ionic channels into the polyamide (PA) layer during interfacial polymerization (IP) shows promise for boosting the Donnan and steric exclusion effects, thus enhancing performance. Herein, we propose a novel method to rapidly synthesize water soluble sulfonic acid containing covalent organic framework (SA-COF) nanosheets and incorporated them during IP to precisely adjust ionic groups within the PA layer. The SA-COF's processability and charged nature enhance compatibility with PA, enabling a high loading (10 wt%) without compromising membrane integrity. Additionally, SA-COF integration during IP results in PA membranes with reduced thickness, increased negative charge density, and increased hydrophilicity. Consequently, PA membranes containing 10 wt% SA-COF, denoted as PA-COF10, demonstrated exceptional water permeance (0.98 L·m−2·h−1·bar−1), surpassing pristine PA membranes (0.39 L·m−2·h−1·bar−1), while maintaining over 98 % rejection for NaCl. Moreover, PA-COF10 membranes exhibited outstanding operational stability and resistance to fouling. This synergistic enhancement of permeance and salt rejection through charged SA-COF integration offers a practical and eco-friendly approach for advanced desalination membrane development, facilitating rapid clean water production.
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来源期刊
Desalination
Desalination 工程技术-工程:化工
CiteScore
14.60
自引率
20.20%
发文量
619
审稿时长
41 days
期刊介绍: Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.
期刊最新文献
Critical challenges in high-salinity seawater reverse osmosis systems: Technical, energy, and environmental reviews Rapid synthesis of charged covalent organic framework for sustainable reverse osmosis membranes Fabrication of high permselectivity nanofiltration membranes based on 3,5-dihydroxybenzoic acid for separation of dye/salts Synthesis and evaluation of scale inhibitors for squeeze treatment of carbonate reservoir A universal mathematical model for forward osmosis systems coupled with experimental validation
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