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.
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.