Bicontinuous porous substrates by polysulfone/2-pyrrolidone binary system for high-performance forward osmosis membranes

doi:10.1016/j.memsci.2024.123614

	Bicontinuous porous substrates by polysulfone/2-pyrrolidone binary system for high-performance forward osmosis membranes
	Sun, Nan1,2 ; Mo, Shucheng1,2 ; Cai, Yuanhang 2; Zhao, Yingshuai1 ; Han, Yaling1,2 ; Zheng, Yijun1 ; He, Tao 2
	2025-02-01
发表期刊	JOURNAL OF MEMBRANE SCIENCE (IF:8.4[JCR-2023],8.1[5-Year])
ISSN	0376-7388
EISSN	1873-3123
卷号	717
DOI	10.1016/j.memsci.2024.123614
摘要	Forward osmosis (FO) has shown great promise in concentrating enriched lithium brine during lithium extraction from salt-lake brine due to low energy consumption and ecologically friendliness. The effective utilization of enormous osmotic pressure of freely available MgCl2 onsite requires highly selective FO membranes with high flux, which calls for thin-film composite forward osmosis (TFC-FO) membranes of highly interconnected substrate and defect-free separation layer. Herein, for the first time, we employed 2-Pyrrolidone (2-PD) as the solvent to prepare FO substrates via the non-solvent induced phase separation (NIPS) for preparing TFC FO membranes. Owing to its weak solubility, the PSf/2-PD polymer solution shows high viscoelasticity, resulting in spinodal demixing and a bicontinuous porous structure, unlike the closed finger-like pore structure observed in the PSf/DMAc binary system. By further reducing the casting humidity and coagulation bath temperature, the substrate surface pore size was optimized to prepare high-performance TFC-FO membranes: the TFC-30%-3 exhibits a water flux of 20.0 LMH and low specific reverse salt flux of 0.23 g/L at AL-FS mode, showing competitive performance compared to the state-of-the-art membranes. These results imply that 2-PD, as an environmentally friendly alternative to traditional solvents, shows significant promise for FO substrate preparation using a simple polymer/solvent binary system.
关键词	Forward osmosis Structural parameter Green solvent Thin film composite Lithium extraction
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收录类别	EI ; SCI
语种	英语
资助项目	National Key Research and Development Program of China[2023YFB3810900] ; Na-tional Natural Science Foundation of China["U20A20139","52011530031","52073175","52473115"]
WOS研究方向	Engineering ; Polymer Science
WOS类目	Engineering, Chemical ; Polymer Science
WOS记录号	WOS:001391308100001
出版者	ELSEVIER
EI入藏号	20245117555874
EI主题词	Osmosis membranes
EI分类号	1301.1.2 Physical Properties of Gases, Liquids and Solids ; 202.2.4 Lithium and Alloys ; 202.9.1 Alkali Metals ; 205.1 Polymeric Materials ; 214 Materials Science ; 802.1 Chemical Plants and Equipment ; 802.3 Chemical Operations
原始文献类型	Journal article (JA)
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/461507
专题	物质科学与技术学院物质科学与技术学院_硕士生物质科学与技术学院_博士生物质科学与技术学院_PI研究组_郑宜君组
通讯作者	He, Tao
作者单位	1.School of Physical Science and Technology& State Key Laboratory of Advanced Medical Materials and Devices, ShanghaiTech University, Shanghai; 201210, China; 2.Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai; 201210, China
第一作者单位	物质科学与技术学院
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Sun, Nan,Mo, Shucheng,Cai, Yuanhang,et al. Bicontinuous porous substrates by polysulfone/2-pyrrolidone binary system for high-performance forward osmosis membranes[J]. JOURNAL OF MEMBRANE SCIENCE,2025,717.
APA	Sun, Nan.,Mo, Shucheng.,Cai, Yuanhang.,Zhao, Yingshuai.,Han, Yaling.,...&He, Tao.(2025).Bicontinuous porous substrates by polysulfone/2-pyrrolidone binary system for high-performance forward osmosis membranes.JOURNAL OF MEMBRANE SCIENCE,717.
MLA	Sun, Nan,et al."Bicontinuous porous substrates by polysulfone/2-pyrrolidone binary system for high-performance forward osmosis membranes".JOURNAL OF MEMBRANE SCIENCE 717(2025).