期刊
LANGMUIR
卷 37, 期 1, 页码 417-427出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.langmuir.0c03068
关键词
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资金
- National Natural Science Foundation of China [21908040, 21878068, 21901058]
- Natural Science Foundation of Hebei Province [B2020202021, B2017202056, B2019202216]
- Program for Top 100 Innovative Talents in Colleges and Universities of Hebei Province [SLRC2017029]
- Hebei High Level Personnel of Support Program [A2016002027]
- Science and Technology Research Project of Hebei Higher Education [ZD2019045]
In this study, a zwitterion-modified molybdenum disulfide (MoS2) dual-layer loose nanofiltration membrane was prepared with antibacterial, antifouling, and high-flux properties integrated. The membrane demonstrated excellent water permeance, dye rejection, salt permeability, antifouling, and antibacterial properties under optimal conditions, benefiting from the synergy of PSBMA/PDA coating layers and MoS2 layers.
Although loose nanofiltration membranes have been extensively studied for dye desalination, high-throughput membranes with antifouling and antibacterial properties are still highly needed. In this study, a zwitterion-modified molybdenum disulfide (MoS2) dual-layer loose nanofiltration membrane was prepared with the integration of antibacterial, antifouling, and high-flux properties. To be specific, MoS2 nanosheets were loaded on a polyacrylonitrile ultrafiltration membrane through pressure-assisted self-assembly. Then, poly (sulfobetaine methacrylate) (PSBMA) was coated on the surface of the MoS2 membrane via a simple polydopamine (PDA)-assisted one-step codeposition to prepare PSBMA/PDA/MoS2 nanofiltration membranes. Elemental and morphological analyses confirmed the formation of the MoS2 layer and PSBMA/PDA coating. In addition, the effect of the PSBMA amount and codeposition time on surface properties and membrane performances was investigated. Under optimum conditions, the as-prepared membrane showed excellent water permeance of 262 LMH/bar with good dye rejection (99.8% for methylene blue) and salt permeability, as well as excellent antifouling and antibacterial properties benefiting from the synergy of PSBMA/PDA coating layers and MoS2 layers.
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