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Development of conductive two-dimensional metal-organic frameworks self-cleaning membrane for enhanced antibiotics rejection and sustainable fouling mitigation.

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Bibliographic Details
Title:	Development of conductive two-dimensional metal-organic frameworks self-cleaning membrane for enhanced antibiotics rejection and sustainable fouling mitigation.
Authors:	Hu, Zebin¹ (AUTHOR), Yin, Zhonglong¹ (AUTHOR) 07263@njnu.edu.cn, Chen, Yufan¹ (AUTHOR), Wen, Tiancheng² (AUTHOR), Li, Feilong³ (AUTHOR), Yang, Weiben¹ (AUTHOR)
Source:	Journal of Membrane Science. Sep2024, Vol. 709, pN.PAG-N.PAG. 1p.
Subjects:	Emerging contaminants, Metal-organic frameworks, Polyvinylidene fluoride, Water pollution, Chemical cleaning
Abstract:	In this study, a novel electroactive NF membrane was constructed for ultrafast rejection of antibiotics with high selectivity and self-cleaning by incorporating a conductive two dimensional metal-organic frameworks (Cu-HHTP) into porous polyvinylidene fluoride (PVDF) matrix with facile and scalable non-solvent induced phase inversion strategy. Cu-HHTP membrane showed two orders of magnitude higher permeability (198.4 L m−2 h−1·bar−1) than the commercial and most reported NF membranes without sacrificing rejection toward negatively charged tetracycline (95.4 %), positively charged vancomycin (99.9 %) and neutrally charged valinomycin (99.9 %). Interestingly, loading Cu-HHTP with hydrophilic and porous nature can break the permeability-rejection trade-off effect and the mechanism was due to the improved water channel and pollutants sieving. Furthermore, it has stable antibiotics rejection and high flux recovery rate of 93.9 % for long-term filtration of wastewater over 264 h with low energy consumption of 0.1007 W h/L and without adding chemical cleaning agents, which demonstrated its excellent fouling control and stability. This study may guide the development of advanced self-cleaning NF membranes tailored for removal of small molecular emerging contaminants. [Display omitted] •Novel NF membrane was designed for ultrafast and effective removal of antibiotics. •Membrane has high permeability of 198.37 LMH·bar−1 without sacrificing rejection. •The role of membrane structure and Cu-HHTP in membrane performance was revealed. •Loading Cu-HHTP in membrane breaks the permeability and rejection trade-off effect. •Membrane has excellent fouling control and stability for long-term water reuse. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	In this study, a novel electroactive NF membrane was constructed for ultrafast rejection of antibiotics with high selectivity and self-cleaning by incorporating a conductive two dimensional metal-organic frameworks (Cu-HHTP) into porous polyvinylidene fluoride (PVDF) matrix with facile and scalable non-solvent induced phase inversion strategy. Cu-HHTP membrane showed two orders of magnitude higher permeability (198.4 L m−2 h−1·bar−1) than the commercial and most reported NF membranes without sacrificing rejection toward negatively charged tetracycline (95.4 %), positively charged vancomycin (99.9 %) and neutrally charged valinomycin (99.9 %). Interestingly, loading Cu-HHTP with hydrophilic and porous nature can break the permeability-rejection trade-off effect and the mechanism was due to the improved water channel and pollutants sieving. Furthermore, it has stable antibiotics rejection and high flux recovery rate of 93.9 % for long-term filtration of wastewater over 264 h with low energy consumption of 0.1007 W h/L and without adding chemical cleaning agents, which demonstrated its excellent fouling control and stability. This study may guide the development of advanced self-cleaning NF membranes tailored for removal of small molecular emerging contaminants. [Display omitted] •Novel NF membrane was designed for ultrafast and effective removal of antibiotics. •Membrane has high permeability of 198.37 LMH·bar−1 without sacrificing rejection. •The role of membrane structure and Cu-HHTP in membrane performance was revealed. •Loading Cu-HHTP in membrane breaks the permeability and rejection trade-off effect. •Membrane has excellent fouling control and stability for long-term water reuse. [ABSTRACT FROM AUTHOR]
ISSN:	03767388
DOI:	10.1016/j.memsci.2024.123108