a.Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
b.Qinghai University, Qinghai 810016, China
c.University of Chinese Academy of Sciences, Beijing 100049, China
fu.liu@nimte.ac.cn
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Prussian Blue/Cellulose Acetate Thin Film Composite Nanofiltration Membrane for Molecular Sieving and Catalytic Fouling Resistance[J]. 高分子科学(英文版), 2023,41(4):593-604.
Hai-Bo Lin, Jian-Guo Zhao, Na Lu, et al. Prussian Blue/Cellulose Acetate Thin Film Composite Nanofiltration Membrane for Molecular Sieving and Catalytic Fouling Resistance[J]. Chinese Journal of Polymer Science, 2023,41(4):593-604.
Prussian Blue/Cellulose Acetate Thin Film Composite Nanofiltration Membrane for Molecular Sieving and Catalytic Fouling Resistance[J]. 高分子科学(英文版), 2023,41(4):593-604. DOI: 10.1007/s10118-023-2950-2.
Hai-Bo Lin, Jian-Guo Zhao, Na Lu, et al. Prussian Blue/Cellulose Acetate Thin Film Composite Nanofiltration Membrane for Molecular Sieving and Catalytic Fouling Resistance[J]. Chinese Journal of Polymer Science, 2023,41(4):593-604. DOI: 10.1007/s10118-023-2950-2.
The Prussian blue engineered cellulose acetate nanofiltration membrane was prepared via a thin film composite strategy. The defect-free FeCo-PB selective layer shows good separation performances for dye molecules and excellent photocatalytic degradation of organic foulants.
Nanofiltration (NF) membranes as high selective separators are appealing for molecular sieving, which still remains a great challenge for the mixed dyes with same charge. In this study, cellulose acetate (CA) membranes were firstly aminated by ethylene imine polymer (PEI), and then the thin film of metal organic frameworks (MOFs) were constructed onto aminated CA membrane through forward-diffusion, slow crystallization and ,in situ, growth of FeCo-Prussian blue (FeCo-PB) crystallization layers. The designed PB@CA composite NF membrane shows an ideal rejection for Congo red (CR)/methyl orange (MO) mixture solution, with 99.7%±0.2% for CR and 33.5%±2% for MO. In addition, the composite NF membrane demonstrated good efficiency for photocatalytic degradation of organic fouling (permeability recovery ratio was up to 92%) due to the active FeCo-PB micro-cubes. Thus, this work provides a practical strategy to prepare MOFs mediated thin film composite nanofiltration membrane for precise molecular sieving and catalytic antifouling performances.
Nanofiltration membraneMolecular sievingCatalytic fouling resistancePrussian blue
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