Membrane separation technology has been taken up for use in diverse applications such as water treatment,pharmaceutical,petroleum,and energy-related industries.Compared with the design of membrane materials,the innova...Membrane separation technology has been taken up for use in diverse applications such as water treatment,pharmaceutical,petroleum,and energy-related industries.Compared with the design of membrane materials,the innovation of membrane preparation technique is more urgent for the development of membrane separation technology,because it not only affects physicochemical properties and separation performance of the fabricated membranes,but also determines their potential in industrialized application.Among the various membrane preparation methods,spray technique has recently gained increasing attention because of its low cost,rapidity,scalability,minimum of environmental burden,and viability for nearly unlimited range of materials.In this Review article,we summarized and discussed the recent developments in separation membranes using the spray technique,including the fundamentals,important features and applications.The present challenges and future considerations have been touched to provide inspired insights for developing the sprayed separation membranes.展开更多
To enhance the performance of the polyphenylene sulfone(PPSU) membrane,a novel mixed matrix membrane with hydrophilicity and antifouling properties was prepared.Using PPSU as the ba sic membrane material,polyvinyl pyr...To enhance the performance of the polyphenylene sulfone(PPSU) membrane,a novel mixed matrix membrane with hydrophilicity and antifouling properties was prepared.Using PPSU as the ba sic membrane material,polyvinyl pyrrolidone(PVP) as the porogen,N-Methyl pyrrolidone(NMP) as the solvent,and MOF-CAU-1(Al_(4)(OH)_(2)(OCH_(3))_4(H_2 N-BDC)_(3)·xH_(2) O) as the filler,PPSU/CAU-1 mixed matrix membrane(MMM) was prepared by an immersion precipitation and phase transformation technique.By changing the amount of MOF-CAU-1,the properties and performance of the MMM membrane were investigated in terms of hydrophilicity,pore morphology,surface roughness,and dye removal.The results show that the highest pure water flux of the mixed reached 47.9 L·m^(-2)·h^(-1), when the CAU-1 addition amount was 1.0 wt%, which was 23% higher than that of the pure PPSU membrane.Both the rejection rate and the antifouling performance of the MMM membrane also noticeably improved.展开更多
Membrane separation technologies demonstrate outstanding potential for achieving efficient lithiumion(Li+)extraction from the battery leachate in a high-value and eco-friendly way,but,up to date,the rare focuses on de...Membrane separation technologies demonstrate outstanding potential for achieving efficient lithiumion(Li+)extraction from the battery leachate in a high-value and eco-friendly way,but,up to date,the rare focuses on developing one kind of specific Li^(+)-filter applicable in this context.Herein,we prepared a pyridinic two-dimensional covalent organic framework(2D COF-Py)membrane featuring non-angstrom-sized 1D channels for exclusive Li+sieving.The 2D COF-Py membrane enabled an excellent Li^(+)permeance(~30 mmol m^(-2) h^(-1))with impressive Li^(+)/M^(2+)selectivity of over 47 under any mixed salt conditions(e.g.LiCl-CoCl_(2),LiCl-NiCl_(2),and LiCl-MnCl_(2)).The experimental measurements and theoretical calculations revealed the dual roles of pyridine groups in dominating the ion transport behavior across the COF membrane.One role was to ensure fast Li^(+)transmembrane activity via electrostatic attraction and the other was to suppress M^(2+)free diffusion by forming strong coordination interactions.When stimulated battery leachate(a quaternary cation solution)was used as the feed solution,the COF-Py membrane not only sustained a striking separation performance under a long-term operation test without losing any trade-off but also maintained structural stability under high-salinity conditions.展开更多
基金supported by the National Key Research and Development Program of China(2021YF B3802600)National Key Research and Development Project of China(2018YFE0203500)the Natural Science Foundation of Jiangsu Province(BK20190603).
文摘Membrane separation technology has been taken up for use in diverse applications such as water treatment,pharmaceutical,petroleum,and energy-related industries.Compared with the design of membrane materials,the innovation of membrane preparation technique is more urgent for the development of membrane separation technology,because it not only affects physicochemical properties and separation performance of the fabricated membranes,but also determines their potential in industrialized application.Among the various membrane preparation methods,spray technique has recently gained increasing attention because of its low cost,rapidity,scalability,minimum of environmental burden,and viability for nearly unlimited range of materials.In this Review article,we summarized and discussed the recent developments in separation membranes using the spray technique,including the fundamentals,important features and applications.The present challenges and future considerations have been touched to provide inspired insights for developing the sprayed separation membranes.
基金supported by Key Research and Development of Tangshan (19140204F)。
文摘To enhance the performance of the polyphenylene sulfone(PPSU) membrane,a novel mixed matrix membrane with hydrophilicity and antifouling properties was prepared.Using PPSU as the ba sic membrane material,polyvinyl pyrrolidone(PVP) as the porogen,N-Methyl pyrrolidone(NMP) as the solvent,and MOF-CAU-1(Al_(4)(OH)_(2)(OCH_(3))_4(H_2 N-BDC)_(3)·xH_(2) O) as the filler,PPSU/CAU-1 mixed matrix membrane(MMM) was prepared by an immersion precipitation and phase transformation technique.By changing the amount of MOF-CAU-1,the properties and performance of the MMM membrane were investigated in terms of hydrophilicity,pore morphology,surface roughness,and dye removal.The results show that the highest pure water flux of the mixed reached 47.9 L·m^(-2)·h^(-1), when the CAU-1 addition amount was 1.0 wt%, which was 23% higher than that of the pure PPSU membrane.Both the rejection rate and the antifouling performance of the MMM membrane also noticeably improved.
基金the Collaborative Innovation Center of Suzhou Nano Science and Technologysupported by the National Natural Science Foundation of China[22408246]+1 种基金the Postdoctoral Fellowship Program of CPSF under Grant Number GZC20231879the China Postdoctoral Science Foundation 2024M752318.
文摘Membrane separation technologies demonstrate outstanding potential for achieving efficient lithiumion(Li+)extraction from the battery leachate in a high-value and eco-friendly way,but,up to date,the rare focuses on developing one kind of specific Li^(+)-filter applicable in this context.Herein,we prepared a pyridinic two-dimensional covalent organic framework(2D COF-Py)membrane featuring non-angstrom-sized 1D channels for exclusive Li+sieving.The 2D COF-Py membrane enabled an excellent Li^(+)permeance(~30 mmol m^(-2) h^(-1))with impressive Li^(+)/M^(2+)selectivity of over 47 under any mixed salt conditions(e.g.LiCl-CoCl_(2),LiCl-NiCl_(2),and LiCl-MnCl_(2)).The experimental measurements and theoretical calculations revealed the dual roles of pyridine groups in dominating the ion transport behavior across the COF membrane.One role was to ensure fast Li^(+)transmembrane activity via electrostatic attraction and the other was to suppress M^(2+)free diffusion by forming strong coordination interactions.When stimulated battery leachate(a quaternary cation solution)was used as the feed solution,the COF-Py membrane not only sustained a striking separation performance under a long-term operation test without losing any trade-off but also maintained structural stability under high-salinity conditions.
