Prefilling polymers to regulate interfacial hierarchical structures of ceramic membranes for enhanced membrane performance

IF 8.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Desalination Pub Date : 2025-01-30 DOI:10.1016/j.desal.2025.118634

Kai Miao , Hengxin Li , Bing Xu , Shiyuan Liu , Dong Zou , Kecheng Guan , Xiaojin Wu , Hideto Matsuyama

{"title":"Prefilling polymers to regulate interfacial hierarchical structures of ceramic membranes for enhanced membrane performance","authors":"Kai Miao , Hengxin Li , Bing Xu , Shiyuan Liu , Dong Zou , Kecheng Guan , Xiaojin Wu , Hideto Matsuyama","doi":"10.1016/j.desal.2025.118634","DOIUrl":null,"url":null,"abstract":"<div><div>Superhydrophobic ceramic membranes show great robust properties for membrane distillation (MD) to recycle fresh water from high-salinity wastewater. In this work, a prefilling method was proposed to fill the polymers in the pore channels of the ceramic membranes before in-situ growing hierarchical ceramic nanoflowers. It was demonstrated that the ceramic nanoflowers just grew on the membrane surface and did not block the inner channels of the ceramic membranes. In addition, these nanoflowers regulated pore size of the membrane and enabled superhydrophobic properties simultaneously. The effects of the Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub> concentration, hydrothermal treatment time, sintering temperature of Al<sub>2</sub>O<sub>3</sub> nanoflowers, and the prefilling process on the performance of the membrane were investigated. The results indicated that the pore size of the ceramic membrane decreased from 0.635 μm to 0.214 μm after in-situ growing Al<sub>2</sub>O<sub>3</sub> nanoflowers. Meanwhile, the resulting water contact angle of the membranes increased from 135.3 ± 1° to 153.2 ± 0.6°. The resulting membrane exhibited high stable performance and salt rejection when treating the salinity-contained wastewaters. This work paved a new way to improve the MD performance of ceramic membranes.</div></div>","PeriodicalId":299,"journal":{"name":"Desalination","volume":"602 ","pages":"Article 118634"},"PeriodicalIF":8.3000,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Desalination","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0011916425001092","RegionNum":1,"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

Superhydrophobic ceramic membranes show great robust properties for membrane distillation (MD) to recycle fresh water from high-salinity wastewater. In this work, a prefilling method was proposed to fill the polymers in the pore channels of the ceramic membranes before in-situ growing hierarchical ceramic nanoflowers. It was demonstrated that the ceramic nanoflowers just grew on the membrane surface and did not block the inner channels of the ceramic membranes. In addition, these nanoflowers regulated pore size of the membrane and enabled superhydrophobic properties simultaneously. The effects of the Al₂(SO₄)₃ concentration, hydrothermal treatment time, sintering temperature of Al₂O₃ nanoflowers, and the prefilling process on the performance of the membrane were investigated. The results indicated that the pore size of the ceramic membrane decreased from 0.635 μm to 0.214 μm after in-situ growing Al₂O₃ nanoflowers. Meanwhile, the resulting water contact angle of the membranes increased from 135.3 ± 1° to 153.2 ± 0.6°. The resulting membrane exhibited high stable performance and salt rejection when treating the salinity-contained wastewaters. This work paved a new way to improve the MD performance of ceramic membranes.

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

Desalination 工程技术-工程：化工

CiteScore

14.60

自引率

20.20%

发文量

619

审稿时长

41 days

期刊介绍： Desalination is a scholarly journal that focuses on the field of desalination materials, processes, and associated technologies. It encompasses a wide range of disciplines and aims to publish exceptional papers in this area. The journal invites submissions that explicitly revolve around water desalting and its applications to various sources such as seawater, groundwater, and wastewater. It particularly encourages research on diverse desalination methods including thermal, membrane, sorption, and hybrid processes. By providing a platform for innovative studies, Desalination aims to advance the understanding and development of desalination technologies, promoting sustainable solutions for water scarcity challenges.