Underwater superoleophobic and underoil superhydrophobic PDA/Na2SiO3/N-TiO2coated mesh for selective oil/water separation and photocatalytic degradation of methylene blue

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

International Journal of Environmental Science and Technology Pub Date : 2024-10-22 DOI:10.1007/s13762-024-06134-1

D. Q. Y. Alfarraji, A. A. Amooey, F. Elmi

{"title":"Underwater superoleophobic and underoil superhydrophobic PDA/Na2SiO3/N-TiO2coated mesh for selective oil/water separation and photocatalytic degradation of methylene blue","authors":"D. Q. Y. Alfarraji, A. A. Amooey, F. Elmi","doi":"10.1007/s13762-024-06134-1","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, a modified stainless steel (SS) mesh was used to selectively separate both light and heavy oils from oil/water mixtures. The first layer consisted of polydopamine (PDA). The rigid building blocks of Na<sub>2</sub>SiO<sub>3</sub> and N-TiO<sub>2</sub> were formed on the SS/PDA surface, resulting in the SS/PDA/Na<sub>2</sub>SiO<sub>3</sub>/N-TiO<sub>2</sub> mesh. Modified meshes were characterized using FESEM/EDX, ATR-FTIR spectroscopy, underwater oil contact angle, and underoil water contact angle methods. The results revealed that the underoil superhydrophobic and underwater superoleophobic coated mesh could selectively remove both heavy and light oils from water for up to twenty repeated cycles, with high separation efficiencies of 94% and 98%, respectively. The modified mesh demonstrated high photocatalytic degradation of methylene blue within 240 min under UV-A illumination. This specially designed membrane offers the benefit of selectively separate heavy and light oils from oil/water mixtures without the need for external stimuli. Furthermore, it exhibits photo-responsive characteristics and can effectively degrade pollutants when exposed to UV-A light. Therefore, the coated mesh can show significant promise for industrial applications.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":589,"journal":{"name":"International Journal of Environmental Science and Technology","volume":"22 6","pages":"4043 - 4054"},"PeriodicalIF":3.0000,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environmental Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1007/s13762-024-06134-1","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

In this study, a modified stainless steel (SS) mesh was used to selectively separate both light and heavy oils from oil/water mixtures. The first layer consisted of polydopamine (PDA). The rigid building blocks of Na₂SiO₃ and N-TiO₂ were formed on the SS/PDA surface, resulting in the SS/PDA/Na₂SiO₃/N-TiO₂ mesh. Modified meshes were characterized using FESEM/EDX, ATR-FTIR spectroscopy, underwater oil contact angle, and underoil water contact angle methods. The results revealed that the underoil superhydrophobic and underwater superoleophobic coated mesh could selectively remove both heavy and light oils from water for up to twenty repeated cycles, with high separation efficiencies of 94% and 98%, respectively. The modified mesh demonstrated high photocatalytic degradation of methylene blue within 240 min under UV-A illumination. This specially designed membrane offers the benefit of selectively separate heavy and light oils from oil/water mixtures without the need for external stimuli. Furthermore, it exhibits photo-responsive characteristics and can effectively degrade pollutants when exposed to UV-A light. Therefore, the coated mesh can show significant promise for industrial applications.

Graphical abstract

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Environmental Science and Technology 环境科学-环境科学

CiteScore

5.60

自引率

6.50%

发文量

806

审稿时长

10.8 months

期刊介绍： International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management. A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made. The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.