Preparation and performance study of PTh/PVDF composite separation membrane: Fabrication of nanoscale selective layer using readily available thiophene

IF 8.1 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Chemosphere Pub Date : 2025-10-17 DOI:10.1016/j.chemosphere.2025.144726

Zengchi Hu , Xiaoyu Wang , Tao Cai , Xue Li , Jiangbin Xia

{"title":"Preparation and performance study of PTh/PVDF composite separation membrane: Fabrication of nanoscale selective layer using readily available thiophene","authors":"Zengchi Hu , Xiaoyu Wang , Tao Cai , Xue Li , Jiangbin Xia","doi":"10.1016/j.chemosphere.2025.144726","DOIUrl":null,"url":null,"abstract":"<div><div>The development of high-performance microporous polymer composite separation membranes using simple and readily available monomers is a critical focus. In this study, thiophene, an aromatic compound commonly occurring in petroleum, has been employed in the fabrication of high performance PTh/PVDF composite separation membrane. The entire membrane formation process was conducted under a vapor phase environment, eliminating the need for additional solvents, which offers advantages such as simple operation, high membrane-forming efficiency and environmental friendliness. The selective performance of PTh/PVDF membrane was highly satisfactory, exhibiting rejection rates of 97.78 % for neutral red (NR), 96.34 % for azure II (Azu II), and 98.74 % for Congo red (CR). The permeability for various dye solutions ranged from 20 to 40 L m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup>, indicating excellent filtration efficiency for practical applications. Furthermore, PTh/PVDF membrane demonstrated remarkable resistance to harsh conditions, maintaining outstanding separation efficiency under conditions of high alkalinity, elevated temperatures, and saline contamination. Additionally, PTh/PVDF membrane showed promising stability, with a rejection rate for NR molecules consistently above 97.34 % over a continuous filtration test lasting 48 h. The readily available raw material and simplicity of the preparation process position the high-performance PTh/PVDF membrane as a promising candidate for applications in wastewater treatment.</div></div>","PeriodicalId":276,"journal":{"name":"Chemosphere","volume":"391 ","pages":"Article 144726"},"PeriodicalIF":8.1000,"publicationDate":"2025-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemosphere","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0045653525006745","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

The development of high-performance microporous polymer composite separation membranes using simple and readily available monomers is a critical focus. In this study, thiophene, an aromatic compound commonly occurring in petroleum, has been employed in the fabrication of high performance PTh/PVDF composite separation membrane. The entire membrane formation process was conducted under a vapor phase environment, eliminating the need for additional solvents, which offers advantages such as simple operation, high membrane-forming efficiency and environmental friendliness. The selective performance of PTh/PVDF membrane was highly satisfactory, exhibiting rejection rates of 97.78 % for neutral red (NR), 96.34 % for azure II (Azu II), and 98.74 % for Congo red (CR). The permeability for various dye solutions ranged from 20 to 40 L m⁻²·h⁻¹·bar⁻¹, indicating excellent filtration efficiency for practical applications. Furthermore, PTh/PVDF membrane demonstrated remarkable resistance to harsh conditions, maintaining outstanding separation efficiency under conditions of high alkalinity, elevated temperatures, and saline contamination. Additionally, PTh/PVDF membrane showed promising stability, with a rejection rate for NR molecules consistently above 97.34 % over a continuous filtration test lasting 48 h. The readily available raw material and simplicity of the preparation process position the high-performance PTh/PVDF membrane as a promising candidate for applications in wastewater treatment.

查看原文本刊更多论文

PTh/PVDF复合分离膜的制备及性能研究：利用易得噻吩制备纳米级选择膜。

使用简单易得的单体开发高性能微孔聚合物复合分离膜是一个关键的焦点。本研究将石油中常见的芳香族化合物噻吩用于制备高性能的PTh/PVDF复合分离膜。整个成膜过程在气相环境下进行，不需要额外的溶剂，具有操作简单、成膜效率高、环境友好等优点。PTh/PVDF膜对中性红（NR）的去除率为97.78%，对天蓝色II （Azu II）的去除率为96.34%，对刚果红（CR）的去除率为98.74%。对各种染料溶液的渗透率为20 ~ 40 L m-2·h-1·bar-1，具有良好的过滤效果。此外，PTh/PVDF膜表现出了出色的耐恶劣条件，在高碱度、高温和盐水污染的条件下保持了出色的分离效率。此外，PTh/PVDF膜表现出良好的稳定性，在持续48小时的连续过滤试验中，NR分子的截留率始终保持在97.34%以上。原料容易获得，制备工艺简单，高性能PTh/PVDF膜在废水处理中有很好的应用前景。

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

Chemosphere 环境科学-环境科学

CiteScore

15.80

自引率

8.00%

发文量

4975

审稿时长

3.4 months

期刊介绍： Chemosphere, being an international multidisciplinary journal, is dedicated to publishing original communications and review articles on chemicals in the environment. The scope covers a wide range of topics, including the identification, quantification, behavior, fate, toxicology, treatment, and remediation of chemicals in the bio-, hydro-, litho-, and atmosphere, ensuring the broad dissemination of research in this field.