Self-cleaning micro/nano graded porous groove structure fiber membranes by coaxial spinning for purification of dye wastewater

IF 7.7 2区环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES

Environmental Research Pub Date : 2024-12-17 DOI:10.1016/j.envres.2024.120660

Wanwan Peng , Shuting Tian , Shuangshuang Li , Jingcheng Wu , Daqing Wu , Peng Zhou , Hongjie Li , Yi He , Yang Bai

{"title":"Self-cleaning micro/nano graded porous groove structure fiber membranes by coaxial spinning for purification of dye wastewater","authors":"Wanwan Peng , Shuting Tian , Shuangshuang Li , Jingcheng Wu , Daqing Wu , Peng Zhou , Hongjie Li , Yi He , Yang Bai","doi":"10.1016/j.envres.2024.120660","DOIUrl":null,"url":null,"abstract":"<div><div>Adjusting the structure of the membrane and improving its performance proved to be an effective technique for accomplishing efficient dye wastewater purification. Water erosion of polyvinylpyrrolidone (PVP) core in polyacrylonitrile (PAN) nanofiber membrane modified with UiO-66-NH<sub>2</sub> was successfully achieved, in this study, using coaxial electrospinning, and ZIF-8 with excellent performance was further epitaxy-grown in situ. Two differently shaped and positively charged MOFs confer strong adsorption capacity (adsorption capacity >2042 mg/g) on cationic dyes. In addition, the multi-dimensional separation pores brought by the micro/nano graded porous groove structure and MOFs not only make the membrane have excellent static adsorption performance, but also have excellent dynamic separation performance under the influence of toxic heavy ions (separation efficiency >99 %; Flux >1666 L m<sup>−2</sup> h<sup>−1</sup> bar<sup>−1</sup>). More importantly, this special structure of the membrane has an excellent photocatalytic activity for the dye, so the membrane can be used for a long time in a green and environmentally friendly way. Together, membranes show a significant deal of potential for the treatment of wastewater containing dyes due to the combination of these outstanding characteristics.</div></div>","PeriodicalId":312,"journal":{"name":"Environmental Research","volume":"267 ","pages":"Article 120660"},"PeriodicalIF":7.7000,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Research","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0013935124025647","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

Adjusting the structure of the membrane and improving its performance proved to be an effective technique for accomplishing efficient dye wastewater purification. Water erosion of polyvinylpyrrolidone (PVP) core in polyacrylonitrile (PAN) nanofiber membrane modified with UiO-66-NH₂ was successfully achieved, in this study, using coaxial electrospinning, and ZIF-8 with excellent performance was further epitaxy-grown in situ. Two differently shaped and positively charged MOFs confer strong adsorption capacity (adsorption capacity >2042 mg/g) on cationic dyes. In addition, the multi-dimensional separation pores brought by the micro/nano graded porous groove structure and MOFs not only make the membrane have excellent static adsorption performance, but also have excellent dynamic separation performance under the influence of toxic heavy ions (separation efficiency >99 %; Flux >1666 L m⁻² h⁻¹ bar⁻¹). More importantly, this special structure of the membrane has an excellent photocatalytic activity for the dye, so the membrane can be used for a long time in a green and environmentally friendly way. Together, membranes show a significant deal of potential for the treatment of wastewater containing dyes due to the combination of these outstanding characteristics.

查看原文本刊更多论文

利用同轴纺丝技术自清洁微/纳米分级多孔沟槽结构纤维膜，用于净化染料废水。

调整膜的结构，提高膜的性能是实现染料废水高效净化的有效技术。本研究成功地实现了UiO-66-NH2改性聚丙烯腈（PAN）纳米纤维膜中聚乙烯吡咯烷酮（PVP）芯的水侵蚀，并采用同轴静电纺丝技术对性能优异的ZIF-8进行了原位外延生长。两种不同形状和带正电荷的MOFs对阳离子染料具有很强的吸附能力（吸附容量>2042 mg/g）。此外，微纳梯度多孔槽结构和MOFs带来的多维分离孔不仅使膜具有优异的静态吸附性能，而且在有毒重离子的影响下也具有优异的动态分离性能(分离效率> 99%；通量> 1666 L m-2 h-1 bar-1)。更重要的是，这种特殊结构的膜对染料具有优异的光催化活性，因此这种膜可以长期绿色环保地使用。总之，由于这些突出特性的结合，膜在处理含有染料的废水方面显示出巨大的潜力。

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

Environmental Research 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

12.60

自引率

8.40%

发文量

2480

审稿时长

4.7 months

期刊介绍： The Environmental Research journal presents a broad range of interdisciplinary research, focused on addressing worldwide environmental concerns and featuring innovative findings. Our publication strives to explore relevant anthropogenic issues across various environmental sectors, showcasing practical applications in real-life settings.