Enhancing the permeability, anti-biofouling performance and long-term stability of TFC nanofiltration membrane by imidazole-modified carboxylated graphene oxide/polyethersulfone substrate

Geng, Chengbao; Zhao, Fei; Niu, Hongyan; Zhang, Jiaming; Dong, Hongbiao; Li, Zhiguo; Chen, Hongxu

doi:10.1016/j.memsci.2022.121099

Cited by 79 publications

(16 citation statements)

References 49 publications

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“…The colony counting method was used for the number of adhered bacteria on the surface to show the antiadhesion property of PBOZs. ,− The bacterial suspension (10 8 CFU/mL) was co-incubated with PBOZs for 6 h at 37 °C. The bacteria adhered on the surface of PBOZs were dispersed into phosphate-buffered saline buffer and then incubated on the solid agar plate at 37 °C for 12 h. The tests were repeated three times.…”

Section: Methodsmentioning

confidence: 99%

Benzoxazine Monomers with Antibacterial Property and Polybenzoxazines for Preventing Adhesion to Bacteria

Yuan

Wang

et al. 2023

ACS Appl. Polym. Mater.

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A series of biobased benzoxazine monomers (TF-BOZs) were designed and synthesized using tyrosine methyl ester, furfural, and five amine sources through the Mannich condensation reaction. The structures of BOZs were examined using 1H NMR, 13C NMR, mass spectra (MS), and Fourier transform infrared spectra (FT-IR), which indicated the successful synthesis of TF-BOZ monomers. Curing behavior was studied, which revealed that BOZ monomers could form polybenzoxazine resins (PBOZs) via ring-opening polymerization. In addition, the PBOZs exhibited remarkable thermal stability, which is better than that of the traditional bisphenol A–aniline polybenzoxazine. The antibacterial properties and antibiofilm performances of the BOZs were investigated. The TF-BOZs showed significant broad-spectrum antibacterial activity against Gram-positive Staphylococcus aureus (S. aureus), Gram-negative Escherichia coli (E. coli), and Pseudomonas aeruginosa (P. aeruginosa). The BOZ-Ola exhibited the best antibacterial property with the minimum inhibitory concentration (MIC) of 5 μg/mL against S. aureus, which, based on the electrostatic interaction acts on the bacterial surface and hydrophobic interaction destroys cell membrane integrity. Notably, PBOZs exhibited significant resistance to bacterial adhesion because of their antimicrobial properties, stable hydrophobicity, and low surface energy, indicating their application potential as antifouling materials. Those results indicate the great potential of TF-BOZs and PBOZs as antibacterial agents and materials to solve bacterial contamination and expand the application range of sustainable materials.

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Section: Methodsmentioning

confidence: 99%

Benzoxazine Monomers with Antibacterial Property and Polybenzoxazines for Preventing Adhesion to Bacteria

Yuan

Wang

et al. 2023

ACS Appl. Polym. Mater.

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“…The bare TFC membrane showed a contact angle around 35−45°consistent with what was reported in the literature. 54 However, the measurement of the contact angle for all SFAC-functionalized membranes posed a challenge as water droplets passed through the membrane almost instantaneously. Generally, surface chemistry and topology, including roughness and porosity, play a crucial role in determining the contact angle of a surface.…”

Section: Membrane Structural Characteristicsmentioning

confidence: 99%

Designing Super Fine Activated Carbon-Functionalized Thin-Film Nanocomposite Membranes for Adsorptive Removal of Per- and Poly-Fluoroalkyl Substances

Kasula,

Pala,

Esfahani

2024

ACS Appl. Eng. Mater.

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The ubiquity of per-and poly-fluoroalkyl substances (PFASs) in production and usage, coupled with their enduring presence and mobility within the environment, has underscored significant human exposure. Membrane filtration and adsorption processes stand as principal and effective means for PFAS elimination from water, each contributing to distinct separation attributes. While thin-film composite (TFC) nanofiltration (NF) membranes achieve satisfactory PFAS removal (<90%), rejected PFAS in the concentrated stream necessitates supplementary separation measures. This study presents the development of adsorptive thin-film nanocomposite (TFN) NF membranes, functionalized with submicron (∼500 nm) activated carbon (SFAC), to enhance perfluorooctanesulfonic acid (PFOS) removal via adsorption during water filtration. The NF membrane was fabricated on a poly(ether sulfone) support layer with a polyamide (PA) selective layer functionalized by immobilization of SFAC inside the PA via interfacial polymerization (IP). The effect of SFAC on the piperazine and trimesoyl chloride transport during the IP process and consequently on the PA attributes encompassing morphology and chemistry, and performance (permeability and rejection) was investigated. The resulting SFAC-TFN membranes with optimal loading showcased a remarkable PFOS removal efficiency of 94%, where over 80% was attributed to adsorption. Furthermore, these membranes exhibited heightened permeability while maintaining marginal salt rejection reduction in comparison to bare TFC membranes. Remarkably, SFAC-TFN membranes exhibited sustained PFOS removal even after four regeneration cycles, employing a 50% ethanol/water solution for regeneration. The findings offer insights into the synergy of adsorption and separation mechanisms, indicating promising avenues for advanced PFAS treatment strategies.

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“…and advanced oxidation. [18][19][20][21] As a challenging problem, conventional water treatment methods require the usage of large quantities to purify pollutants. 7 On top of this fact, the annihilation of some pollutants is very difficult because of their toxic and resistant properties towards biological agents.…”

Section: Introductionmentioning

confidence: 99%

“…Sedimentation, filtration, and other technologies implicate high operating costs with the risk of introducing other toxic contaminant species into the ecosystem. [18][19][20][21] Although chlorination is widely exerted in disinfection processes, however, the by-products (using chlorination method) are carcinogenic and mutagenic to humans. Next to their different reaction systems, all of the heterogeneous processes are described with the same chemical properties among the advanced oxidation procedures, which is the usage of photocatalytic compounds (such as CdS, Fe 2 O 3 , ZnO, and TiO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Study of photodegradation performance of Zn‐doped CeO₂ nanoparticles for wastewater contaminants remediation under visible light

Hamidian

Sarani

Mohebbi

et al. 2023

Applied Organom Chemis

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The presented paper introduces a green route for the arrangement of pure and 1%, 2%, and 4% zinc doped cerium oxide nanoparticles (Zn-doped CeO 2 NPs) by involving the extract of Salvadora persica. The analytical results of powder X-ray diffraction (PXRD), ultraviolet-visible (UV-Vis), field emission scanning electron microscopy (FESEM), energy dispersive X-ray (EDX), and Raman techniques confirmed the successful synthesis of NPs. According to PXRD outcomes, pure CeO 2 NPs have a cubic phase. Moreover, as a result of the zinc doping within the crystal framework of this material, a noticeable alteration was observed in the placement of CeO 2 (101) peak. The size of pure CeO 2 NPs was measured by the FESEM analysis to be around 20-25 nm, which was decreased with the doping of zinc into CeO 2 structure. According to the UV-Vis outcomes, appeared peak in 343 cm À1 confirmed the formation of CeO 2 NPs; and this peak shifted by the doping of zinc. The observed Raman active band F 2g at 459 cm À1 in the graph of CeO 2 can be related to the fluorite type of CeO 2 construction. Moreover, we evaluated the photocatalytic functionality of the prepared samples towards acid orange 7 (AO7) dye at visible light. The gathered data indicated 2% Zn-doped CeO 2 as the optimum sample due to eliminating 83% of AO7 dye at the volume of 15 mg L À1 in pH = 7. Therefore, performing a doping process on these NPs was a suitable choice for improving the photocatalytic activity of CeO 2 on AO7 dye.

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Enhancing the permeability, anti-biofouling performance and long-term stability of TFC nanofiltration membrane by imidazole-modified carboxylated graphene oxide/polyethersulfone substrate

Cited by 79 publications

References 49 publications

Benzoxazine Monomers with Antibacterial Property and Polybenzoxazines for Preventing Adhesion to Bacteria

Benzoxazine Monomers with Antibacterial Property and Polybenzoxazines for Preventing Adhesion to Bacteria

Designing Super Fine Activated Carbon-Functionalized Thin-Film Nanocomposite Membranes for Adsorptive Removal of Per- and Poly-Fluoroalkyl Substances

Study of photodegradation performance of Zn‐doped CeO₂ nanoparticles for wastewater contaminants remediation under visible light

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Enhancing the permeability, anti-biofouling performance and long-term stability of TFC nanofiltration membrane by imidazole-modified carboxylated graphene oxide/polyethersulfone substrate

Cited by 79 publications

References 49 publications

Benzoxazine Monomers with Antibacterial Property and Polybenzoxazines for Preventing Adhesion to Bacteria

Benzoxazine Monomers with Antibacterial Property and Polybenzoxazines for Preventing Adhesion to Bacteria

Designing Super Fine Activated Carbon-Functionalized Thin-Film Nanocomposite Membranes for Adsorptive Removal of Per- and Poly-Fluoroalkyl Substances

Study of photodegradation performance of Zn‐doped CeO2 nanoparticles for wastewater contaminants remediation under visible light

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Product

Resources

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Study of photodegradation performance of Zn‐doped CeO₂ nanoparticles for wastewater contaminants remediation under visible light