MIL-101(Cr)has a special pore cage structure that provides broad channels for the transport of water molecules in the reverse osmosis(RO)water separation and purification.Combining MIL-101(Cr)with FeO4 nanoparticles f...MIL-101(Cr)has a special pore cage structure that provides broad channels for the transport of water molecules in the reverse osmosis(RO)water separation and purification.Combining MIL-101(Cr)with FeO4 nanoparticles forms a water transport intermediate layer between the polyamide separation membrane and the polysulfone support base under an external magnetic field.MiL-101(Cr)is stable in both water and air while resistant to high temperature.With the introduction of 0.003 wt.%MIL-101(Cr)/Fe3O4,the water flux increased by 93.31%to 6.65 L.m-2.h-1.bar-1 without sacrificing the NaCl rejection of 95.88%.The MIL-101(Cr)/Fe3O4 multilayer membrane also demonstrated certain anti-pollution properties and excellent stability in a 72-h test.Therefore,the construction of a MIL-101(Cr)/FeO4 interlayer can effectively improve the permeability of RO composite membranes.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.22308183,21776147,21905153,61604086,22378221,and 52002198)the Natural Science Foundation of Shandong Province(Grant Nos.ZR2023QB070 and ZR2021YQ32)+4 种基金the Taishan Scholar Project of Shandong Province(Grant No.tsqn201909117)the Qingdao Science and Technology Benefit the People Demonstration and Guidance Special Project(Grant No.23-2-8-cspz-11-nsh)the Qingdao Natural Science Foundation(Grant No.23-2-1-241-zyyd-jch)the China Postdoctoral Science Foundation(Grant No.2023M731856)Prof.Lifeng Dong also thanks financial support from the Malmstrom Endowed Fund at Hamline University。
文摘MIL-101(Cr)has a special pore cage structure that provides broad channels for the transport of water molecules in the reverse osmosis(RO)water separation and purification.Combining MIL-101(Cr)with FeO4 nanoparticles forms a water transport intermediate layer between the polyamide separation membrane and the polysulfone support base under an external magnetic field.MiL-101(Cr)is stable in both water and air while resistant to high temperature.With the introduction of 0.003 wt.%MIL-101(Cr)/Fe3O4,the water flux increased by 93.31%to 6.65 L.m-2.h-1.bar-1 without sacrificing the NaCl rejection of 95.88%.The MIL-101(Cr)/Fe3O4 multilayer membrane also demonstrated certain anti-pollution properties and excellent stability in a 72-h test.Therefore,the construction of a MIL-101(Cr)/FeO4 interlayer can effectively improve the permeability of RO composite membranes.
