A non-fluorinated liquid-like membrane with excellent anti-scaling performance for membrane distillation

作     者：Jianwen Zhao Shuai Wang Shanshan Zhao Liwei Chen Fangang Meng Xuelin Tian Jianwen Zhao;Shuai Wang;Shanshan Zhao;Liwei Chen;Fangang Meng;Xuelin Tian

作者机构：State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Materials Science and EngineeringSun Yat-sen UniversityGuangzhou 510006China Key Laboratory for Polymeric Composite&Functional Materials of Ministry of EducationGuangzhou Key Laboratory of Flexible Electronic Materials and Wearable DevicesSun Yat-sen UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation TechnologySchool of Environmental Science and EngineeringSun Yat-sen UniversityGuangzhou 510006China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报(英文版))

年 卷 期：2025年第36卷第1期

页      面：521-528页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by National Natural Science Foundation of China(Nos.22072185,12072381) Guangdong Basic and Applied Basic Research Foundation(No.2021A1515110221) Fundamental Research Funds for the Central Universities,Sun Yatsen University(No.23yxqntd002) 

主　　题：Surface modification Liquid-like membranes Anti-scaling Non-fluorinated Direct contact membrane distillation 

摘      要：Membrane distillation(MD)has gained extensive attention for treating highly saline ***,membrane scaling during the MD process has hindered the rapid development of this *** approaches to mitigate scaling in membrane distillation focus primarily on achieving enhanced hydrophobicity and even superhydrophobicity via utilizing fluorinated fibrous membrane or introducing perfluorosilane *** the environmental hazards posed by fluorinated compounds,it is highly desirable to develop non-fluorinated membranes with enhanced anti-scaling properties for effective membrane *** this study,we present a non-fluorinated liquid-like MD membrane with exceptional anti-scaling *** membrane was facilely fabricated by grafting linear polydimethylsiloxane(LPDMS)onto a hydrophilic polyether sulfone(PES)membrane pre-coated with the intermediate layers of polydopamine and silica(denoted as LPDMS-PES).Remarkably,LPDMS-PES manifested a drastically improved scaling resistance in continuous MD tests than its perfluorinated counterpart,i.e.,1H,1H,2H,2H-perfluorooctyltrichlorosilane-modified PES membrane(PFOS-PES),in both heterogeneous nucleation-dominated and crystal deposition-dominated scaling processes,despite the latter having a smaller surface ***-PES demonstrated a reduction of crystal accumulation of approximately 85%for Na Cl and 73%for Ca SO_(4) in the heterogeneous nucleation-dominated scaling process compared to ***,in the crystal deposition-dominated scaling process LPDMS-PES exhibited a reduction of about 70%in scale *** results explicitly evidenced the great potential of the liquid-like membrane to minimize scaling in membrane distillation by inhibiting both scale nucleation and adhesion onto the *** believe the findings of this study have important implications for the design of high-performance MD membranes,particularly in the quest for environmentally susta