Polyamide thin-film nanocomposite membrane containing star-shaped ZIF-8 with enhanced water permeance and PPCPs removal

Wang, Hongli; Wang, Liang; Zhao, Bin; Qian, Yiran; Zhang, Hongwei

doi:10.1016/j.seppur.2022.120886

Cited by 26 publications

(3 citation statements)

References 50 publications

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“…The water flux was determined by the pore size and hydrophilicity of the membrane. , Although the membrane hydrophilicity increased after the introduction of PMo 12 as demonstrated by WCA results, the deposited polymer layer shrank the membrane pore size, which caused a raised water transport resistance, thus leading to a decreased water flux. Especially for the PAN-85P-PG, the sharp flux drop might be ascribed to the excessive deposited polymers on the membrane surface.…”

Section: Resultsmentioning

confidence: 99%

Polyethylenimine Deposited on Phosphomolybdic-Acid-Loaded Polyacrylonitrile Membranes for Enhanced Dye/Salt Separation

Liao

Wang

et al. 2023

ACS EST Water

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Rationally designing membranes for efficient fractionation of dyes and salts is a great challenge in the membrane community. Here, a composite loose nanofiltration membrane (NF) was fabricated by depositing polyethylenimine (PEI) onto a phosphomolybdic acid (PMo 12 )-loaded polyacrylonitrile substrate followed by cross-linking with glutaraldehyde. The physical and chemical properties of the loose NF membrane were systematically investigated. Compared with the unloaded membrane, the introduction of PMo 12 regulates the deposition of PEI, leading to a smaller pore size, higher hydrophilicity, and stronger charge of the loose NF membrane. The optimized loose NF membrane presented an extremely low rejection of <2.00% to inorganic salts sodium sulfate (Na 2 SO 4 ), magnesium sulfate, magnesium chloride, and sodium chloride, while maintaining a high rejection of >99.00% to organic dye Congo red (CR). In addition, the loose NF membrane is capable of fractionating CR/Na 2 SO 4 mixtures with an astonishing separation factor of 59.18. Moreover, the stability of the loose NF membrane is qualified for a 100 h period filtration. This work provides an efficient strategy to fabricate loose NF membranes with high separation performance for the fractionation of dyes or salts.

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Section: Resultsmentioning

confidence: 99%

Polyethylenimine Deposited on Phosphomolybdic-Acid-Loaded Polyacrylonitrile Membranes for Enhanced Dye/Salt Separation

Liao

Wang

et al. 2023

ACS EST Water

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“…In the short period of deposition for zeolite interlayer, amine monomer enriched in the vicinity of the discrete zeolite nanocrystal on substrates firstly reacted with TMC monomer to form the initial PA tufts. Subsequently, the slower diffusion of PIP monomer stored at the zeolite nanocrystal interface leads to a unique nanostructure in that the large-sized PA tufts are connected [49,50]. Whereas the interlayer obtained by long-time deposition can adsorb more PIP monomers on the surface and the pore of zeolite due to the enhanced affinity of the interlayer-enhanced substrate (Fig.…”

Section: Morphological Characteristics and Surface Roughness Of Nf Me...mentioning

confidence: 99%

EMT-NH2 zeolite interlayer induces the formation of high-performance polyamide membrane

Wei

Guo

Yang

et al. 2023

Chemical Engineering Journal

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“…As typical crystal materials with desirable properties, such as a highly specific surface area, adjustable pore size, and diverse physicochemical properties, MOFs have benefited from an extensive amount of research and applications in several real-world contexts [ 2 , 3 , 4 ]. New MOF composites, which are obtained by the uniform assembly of MOF particles onto the surface of a base material, have opened exciting avenues toward the research and design of MOF membrane materials [ 5 , 6 , 7 , 8 , 9 , 10 ]. However, the common methods for preparing MOF membranes, including thermal solvent synthesis, liquid phase epitaxial growth, and the Langmuir Blodgett deposition method, among others [ 11 , 12 , 13 , 14 ], present several distinct disadvantages, such as the requirement for further surface functional design [ 15 ], the agglomeration of MOF particles, or the formation of a defective lattice, all of which can negatively impact the function of MOF crystals [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

A Visible Light-Induced and ROS-Dependent Method for the Rapid Formation of a MOF Composite Membrane with Antibacterial Properties

Zhang

Liu

2023

IJMS

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The diverse application potential of metal-organic framework (MOF) materials are currently limited by their challenging and complicated preparation processes. In this study, we successfully developed a novel strategy for the rapid synthesis of a sustainable MOF composite membrane under neutral conditions with improved physicochemical and antibacterial properties. Our reaction pipeline comprised visible light that induced the production of reactive oxygen species (ROS) from ZIF-8 particles, which facilitated the rapid oxidative polymerization of dopamine to polydopamine. The physicochemical properties of the composite membrane were assessed using imaging methods, including scanning and transmission electron microscopy, X-ray photoelectron spectrometry, and nitrogen adsorption/desorption; its antibacterial effects against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa were measured using optical densitometry. The bactericidal potency of the synthesized membrane was >99% against all tested strains under the conditions of simulated sunlight. Moreover, the composite membrane retained its structural integrity and antibacterial effect after multiple cycles of use and recovery, showcasing remarkable stability. Overall, this study displays a ROS-mediated method for the rapid preparation of sustainable MOF composite membranes under neutral conditions with optimal physicochemical characteristics, antibacterial properties, and performance. Our study provides insights into the use of membrane materials as design platforms for a range of diverse practical applications.

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Polyamide thin-film nanocomposite membrane containing star-shaped ZIF-8 with enhanced water permeance and PPCPs removal

Cited by 26 publications

References 50 publications

Polyethylenimine Deposited on Phosphomolybdic-Acid-Loaded Polyacrylonitrile Membranes for Enhanced Dye/Salt Separation

Polyethylenimine Deposited on Phosphomolybdic-Acid-Loaded Polyacrylonitrile Membranes for Enhanced Dye/Salt Separation

EMT-NH2 zeolite interlayer induces the formation of high-performance polyamide membrane

A Visible Light-Induced and ROS-Dependent Method for the Rapid Formation of a MOF Composite Membrane with Antibacterial Properties

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