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1篇 您的检索式:作者名="Bosheng Lv"
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1Preparation and properties of hollow fibre nanofiltration membrane with continuous coffee-ring structure显示文摘Polyamide(PA)hollow fibre composite nanofiltration(NF)membranes with a coffee-ring structure and beneficial properties were prepared by adding graphene oxide(GO)into the interfacial polymerization process.The presentation of the coffee-ring structure was attributed to the heterogeneous,finely dispersed multiphase reaction system and the“coffee-stain”effect of the GO solution.When the piperazine concentration was 0.4 wt-%,the trimesoyl chloride concentration was 0.3 wt-%,and the GO concentration was 0.025 wt-%,the prepared NF membranes showed the best separation properties.The permeate flux was 76 L·m^(−2)·h^(−1),and the rejection rate for MgSO4 was 98.6%at 0.4 MPa.Scanning electron microscopy,atomic force microscopy,and attenuated total reflectance-Fourier transform infrared spectroscopy were used to characterize the chemical structure and morphology of the PA/GO NF membrane.The results showed that GO was successfully entrapped into the PA functional layer.Under neutral operating conditions,the PA/GO membrane showed typical negatively charged NF membrane separation characteristics,and the rejection rate decreased in the order of Na2SO_(4)>MgSO_(4)>MgCl_(2)>NaCl.The PA/GO NF membrane showed better antifouling performance than the PA membrane.Xiuzhen Wei Xufeng Xu Yi Chen Qian Zhang Lu Liu Ruiyuan Yang Jinyuan Chen Bosheng Lv 2021Frontiers of Chemical Science and Engineering2021,15,2:2
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