Preparation and characterization of PA6/PANI/α-Fe2O3-x composite nanofiber membranes for the removal of tetracycline from wastewater

IF 6.3 2区工程技术 Q1 ENGINEERING, CHEMICAL

Journal of water process engineering Pub Date : 2025-07-23 DOI:10.1016/j.jwpe.2025.108383

Wenlong Wang , Min Li , Junhui Si , Qianting Wang , Sijie Qiu , Yiwen Xu , Xiaolong Liu , Zhixiang Cui

{"title":"Preparation and characterization of PA6/PANI/α-Fe2O3-x composite nanofiber membranes for the removal of tetracycline from wastewater","authors":"Wenlong Wang , Min Li , Junhui Si , Qianting Wang , Sijie Qiu , Yiwen Xu , Xiaolong Liu , Zhixiang Cui","doi":"10.1016/j.jwpe.2025.108383","DOIUrl":null,"url":null,"abstract":"<div><div>Photocatalytic technology has gained significant attention for its effectiveness in degrading tetracycline (TC) pollutants in wastewater. This study successfully constructed a PA6/PANI/α-Fe<sub>2</sub>O<sub>3-x</sub> composite nanofiber membrane with superior photocatalytic performance using electrospinning, in-situ polymerization, and in-situ growth techniques. Photocatalytic experiments demonstrated that the composite nanofiber membrane achieved a high degradation efficiency of 94.89 % in 40 min. Even after six catalytic cycles, the efficiency remained above 80 %, demonstrating its excellent catalytic performance and reusability. Mechanistic studies revealed that superoxide radicals (<img>O<sub>2</sub><sup>−</sup>), generated by photogenerated holes (h<sup>+</sup>), served as the dominant reactive species in the TC degradation process. Meanwhile, the hierarchical porous structure of composite nanofiber membrane enhanced reaction kinetics by improving mass transfer and active site exposure. This work integrates the advantages of conductive polymers and semiconductor heterostructures, providing a cost-effective and recyclable solution for wastewater treatment, with broad application prospects in environmental remediation.</div></div>","PeriodicalId":17528,"journal":{"name":"Journal of water process engineering","volume":"77 ","pages":"Article 108383"},"PeriodicalIF":6.3000,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of water process engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214714425014552","RegionNum":2,"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

Photocatalytic technology has gained significant attention for its effectiveness in degrading tetracycline (TC) pollutants in wastewater. This study successfully constructed a PA6/PANI/α-Fe₂O_3-x composite nanofiber membrane with superior photocatalytic performance using electrospinning, in-situ polymerization, and in-situ growth techniques. Photocatalytic experiments demonstrated that the composite nanofiber membrane achieved a high degradation efficiency of 94.89 % in 40 min. Even after six catalytic cycles, the efficiency remained above 80 %, demonstrating its excellent catalytic performance and reusability. Mechanistic studies revealed that superoxide radicals (O₂⁻), generated by photogenerated holes (h⁺), served as the dominant reactive species in the TC degradation process. Meanwhile, the hierarchical porous structure of composite nanofiber membrane enhanced reaction kinetics by improving mass transfer and active site exposure. This work integrates the advantages of conductive polymers and semiconductor heterostructures, providing a cost-effective and recyclable solution for wastewater treatment, with broad application prospects in environmental remediation.

查看原文本刊更多论文

PA6/PANI/α-Fe2O3-x复合纳米纤维膜去除废水中四环素的制备与表征

光催化技术因其对废水中四环素类污染物的有效降解而受到广泛关注。本研究通过静电纺丝、原位聚合和原位生长技术成功构建了具有优异光催化性能的PA6/PANI/α-Fe2O3-x复合纳米纤维膜。光催化实验表明，复合纳米纤维膜在40 min内的降解效率高达94.89%，即使经过6次催化循环，降解效率仍保持在80%以上，表明其具有良好的催化性能和可重复使用性。机理研究表明，光生空穴（h+）产生的超氧自由基（O2−）是TC降解过程中的主要反应物质。同时，复合纳米纤维膜的分层多孔结构通过改善传质和活性位点暴露来增强反应动力学。本研究结合了导电聚合物和半导体异质结构的优点，为废水处理提供了一种具有成本效益和可循环利用的解决方案，在环境修复中具有广阔的应用前景。

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 water process engineering Biochemistry, Genetics and Molecular Biology-Biotechnology

CiteScore

10.70

自引率

8.60%

发文量

846

审稿时长

24 days

期刊介绍： The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies