Two-dimensional Cu-porphyrin nanosheet membranes for nanofiltration
作者机构：School of Chemistry&Chemical EngineeringGuangdong Provincial Key Lab of Green Chemical Product TechnologyState Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou 510640China School of Instrument Science and Opto-Electronics EngineeringBeijing Information Science and Technology UniversityBeijing 100192China School of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory for Membrane Materials and EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2023年第16卷第5期
页 面：6290-6297页
核心收录：
学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 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）] 0702[理学-物理学]
基 金：the support from the National Key Research and Development Program(No.2021YFB3802500) the National Natural Science Foundation of China(Nos.22022805 and 22078107) This work was supported by State Key Laboratory of Pulp and Paper Engineering(No.2022PY04) Fundamental Research Funds for the Central Universities(No.2022ZYGXZR010)
主 题：two-dimensional material membrane metal-organic framework(MOF) nanofiltration nanosheet morphology electrophoretic deposition
摘 要：A kind of two-dimensional(2D)metal-organic framework(MOF)material,Cu-meso-tetrakis(4-carboxyphenyl)porphine(Cu-TCPP)nanosheets with wrinkled and flat morphologies are used as building blocks to assemble membranes by vacuum filtration(VF)and electrophoretic deposition(EPD)as energy-efficient nanofiltration(NF)membranes to remove dyes from *** the nanosheets with wrinkled structure can provide additional water transport channels,thereby increasing the water permeance,in the premise of a high rejection(97.0%)for the dye brilliant blue G(BBG)(1.60 nm×1.90 nm),the water permeance of the membrane assembled by the wrinkled nanosheets(~1170 nm)is about 4 times that of the membrane assembled by the flat nanosheets(~530 nm),reaching 16.39 L·m^(−2)·h^(−1)·bar^(−1).Additionally,the use of the relatively flat nanosheets and the membrane preparation method of electrophoretic deposition is more conducive to stack nanosheets orderly and reduce ***,the water permeance of the membrane prepared by EPD(~1170 nm)with flat nanosheets is about twice that of the membrane prepared by VF(~530 nm),achieving 9.40 L·m^(−2)·h^(−1)·bar^(−1)with similar rejection(97.0%)of dye evans blue(EB)(3.10 nm×1.20 nm).Furthermore,these membranes still exhibit good separation performance at high pressure of 0.6 *** with diverse structures and various membrane fabrication processes provide new directions for the separation performance optimization of 2D MOF materials for water purification.
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