Fabrication of compact self-standing covalent organic framework membranes with ultrahigh flux and superior performance for dye separation

IF 5.5 3区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of the Taiwan Institute of Chemical Engineers Pub Date : 2025-05-17 DOI:10.1016/j.jtice.2025.106186

Sara Hameed , Farhat Jubeen , Munawar Iqbal , Nargis Bano , Misbah Sultan , Atif Islam , Ayyar Manikandan , Arif Nazir

{"title":"Fabrication of compact self-standing covalent organic framework membranes with ultrahigh flux and superior performance for dye separation","authors":"Sara Hameed , Farhat Jubeen , Munawar Iqbal , Nargis Bano , Misbah Sultan , Atif Islam , Ayyar Manikandan , Arif Nazir","doi":"10.1016/j.jtice.2025.106186","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><div>Covalent organic frameworks (COFs) have become a promising candidate for advanced water treatment membranes due to their adjustable pore sizes, high surface area, remarkable thermal and chemical stability. Typically, COFs are separated as unrefined and insoluble powders, due to which their extensive use as nano-filtration membranes is greatly limited.</div></div><div><h3>Method</h3><div>In this work, we report a facile method of evaporation casting of homogeneous polymerized COF solutions on cellulose support (CS). The homogeneous polymerization method eliminates the need for prior modification of the CS surface, making it a groundbreaking achievement in our study. BZTP-COF solution was prepared by using benzidine (BZ) and terephthalaldehyde (TP). While BZ, melamine (ME) and 2,4,6-triformylphloroglucinol (TFP) were used to prepare the BZMETFP-COF solution.</div></div><div><h3>Significant Findings</h3><div>As expected, the anionic COF membranes exhibited an excellent permeation flux of up to 9479 Lm<sup>−2</sup>h<sup>−1</sup>MPa<sup>−1</sup> with different protic and aprotic solvents. Overall, the BZTP-CS-COF membrane exhibited excellent water permeability (5420 Lm<sup>−2</sup>h<sup>−1</sup>MPa<sup>−1</sup>) and high selectivity with 98% rejection against aqueous MB dye solution. This work provides a pivotal concept and strategies for facile preparation of COF membrane under mild conditions for the treatment of dyeing process effluents.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"173 ","pages":"Article 106186"},"PeriodicalIF":5.5000,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Taiwan Institute of Chemical Engineers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1876107025002391","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Background

Covalent organic frameworks (COFs) have become a promising candidate for advanced water treatment membranes due to their adjustable pore sizes, high surface area, remarkable thermal and chemical stability. Typically, COFs are separated as unrefined and insoluble powders, due to which their extensive use as nano-filtration membranes is greatly limited.

Method

In this work, we report a facile method of evaporation casting of homogeneous polymerized COF solutions on cellulose support (CS). The homogeneous polymerization method eliminates the need for prior modification of the CS surface, making it a groundbreaking achievement in our study. BZTP-COF solution was prepared by using benzidine (BZ) and terephthalaldehyde (TP). While BZ, melamine (ME) and 2,4,6-triformylphloroglucinol (TFP) were used to prepare the BZMETFP-COF solution.

Significant Findings

As expected, the anionic COF membranes exhibited an excellent permeation flux of up to 9479 Lm⁻²h⁻¹MPa⁻¹ with different protic and aprotic solvents. Overall, the BZTP-CS-COF membrane exhibited excellent water permeability (5420 Lm⁻²h⁻¹MPa⁻¹) and high selectivity with 98% rejection against aqueous MB dye solution. This work provides a pivotal concept and strategies for facile preparation of COF membrane under mild conditions for the treatment of dyeing process effluents.

查看原文本刊更多论文

具有超高通量和优异染料分离性能的致密自立共价有机框架膜的制备

共价有机框架材料（COFs）因其孔径可调、比表面积高、热稳定性和化学稳定性好等优点，已成为高级水处理膜的重要候选材料。通常，COFs是作为未精制和不溶性粉末分离的，因此它们作为纳米过滤膜的广泛应用受到很大限制。方法在本工作中，我们报告了一种在纤维素载体（CS）上蒸发铸造均相聚合COF溶液的简便方法。均相聚合方法无需事先对CS表面进行修饰，是本研究的突破性成果。以联苯胺（BZ）和对苯二甲酸乙二醛（TP）为原料制备了BZTP-COF溶液。以BZ、三聚氰胺（ME）和2,4,6-三甲酰间苯三酚（TFP）配制BZMETFP-COF溶液。正如预期的那样，阴离子COF膜在不同的质子和非质子溶剂中表现出优异的渗透通量，高达9479 Lm−2h−1MPa−1。总体而言，BZTP-CS-COF膜具有优异的透水性（5420 Lm−2h−1MPa−1）和高选择性，对MB水溶液的去除率为98%。本研究为在温和条件下制备COF膜处理印染废水提供了关键的概念和策略。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Journal of the Taiwan Institute of Chemical Engineers 工程技术-工程：化工

CiteScore

9.10

自引率

14.00%

发文量

362

审稿时长

35 days

期刊介绍： Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.