Metal-organic framework/zeolite nanocrystal/polyvinylidene fluoride composite ultrafiltration membranes with flux/antifouling advantages

Dehghankar, Mona; Mohammadi, Toraj; Moghadam, Maryam Tavakol; Tofighy, Maryam Ahmadzadeh

doi:10.1016/j.matchemphys.2020.124128

Cited by 45 publications

(11 citation statements)

References 100 publications

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“…MOFs are an attractive material for this purpose due to their tunable surface charge and ability to alter hydrophilicity of membrane matrix. Dehghankar et al reported the effect of nanofiller addition (UiO-66, MIL-101 and FAU zeolite) to PVDF membrane on its surface properties, porosity, water permeability, membrane selectivity and anti-fouling properties [ 147 ]. The addition of inorganic nanofiller improves membrane porosity due to fast liquid-liquid demixing and has larger cavities than pristine PVDF membrane which confirmed from cross-section FESEM image.…”

Section: Specific Improvement Strategies Related To Each Role Of Metal-organic Framework In Wastewater Treatmentmentioning

confidence: 99%

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

et al. 2021

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The accumulation of pollutants in water is dangerous for the environment and human lives. Some of them are considered as persistent organic pollutants (POPs) that cannot be eliminated from wastewater effluent. Thus, many researchers have devoted their efforts to improving the existing technology or providing an alternative strategy to solve this environmental problem. One of the attractive materials for this purpose are metal-organic frameworks (MOFs) due to their superior high surface area, high porosity, and the tunable features of their structures and function. This review provides an up-to-date and comprehensive description of MOFs and their crucial role as adsorbent, catalyst, and membrane in wastewater treatment. This study also highlighted several strategies to improve their capability to remove pollutants from water effluent.

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Section: Specific Improvement Strategies Related To Each Role Of Metal-organic Framework In Wastewater Treatmentmentioning

confidence: 99%

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

et al. 2021

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“…Recently, metal-organic frameworks (MOFs), a class of porous material with inherent large surface areas, uniform but tunable cavities, tailorable chemistry and useful physical and chemical properties, have obtained broad and comprehensive applications than activated carbon and zeolites (Dehghankar et al, 2021). Although MOFs have been explored for a wide range of applications in catalysis, gas storage, chemical sensing, and drug delivery (Zhuang et al, 2014;Yang and Xu, 2017;Xie et at., 2018), there have been only a few reports on using MOFs for removal of heavy metals from wastewater (Efome et al, 2018;Asghar et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

High Performance Copper Based Metal Organic Framework for Removal of Heavy Metals From Wastewater

et al. 2022

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The biggest challenge of this century is the generation of wastewater which is released to the environment due to industrial expansion. Industrial development has caused the release of various pollutants including heavy metals such as Cd, Pb, and Cr into the environment. In this study, copper diphenylamine metal-organic framework (Cu-DPA MOF) has been synthesized via hydrothermal method and its adsorption capacity toward the removal of heavy metals from wastewater was examined. The removal efficiency of heavy metals by Cu-DPA MOF was tested at optimized adsorption parameters such as optimal adsorbent dosage, pH, initial metals concentration, and adsorption time. The heavy metals concentration in the wastewater before treated with the as-synthesized MOF was determined to be 0.3027, 0.0098, and 0.1021 mg/L for Cr, Cd, and Pb, respectively. The corresponding concentrations of heavy metals in wastewater were reduced to 0.0015, 0.00024, and 0.00016 mg/L when treated with the as-synthesized MOF. As a result, a maximum removal efficiency of 97.6%, 99.5%, and 99.5% was achieved for Cd, Cr, and Pb metals, respectively. This is possibly due to the high porous nature and huge surface area of the as-synthesized MOF. The adsorption data were best fitted with Freundlich isotherm throughout this study. The study sheds light on the design of adsorbents with high removal efficiency of pollutants found in the environment.

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“…We found that higher filler loading resulted in a higher roughness of membrane, see M3 & M5 (0.5 wt.%) v.s M2 & M4 (0.1 wt.%) for example. This phenomenon could be explained by that, during phase inversion, MOF particles enriched onto the top layer of the membrane, particularly in higher filler loading condition (Dehghankar et al 2020). The AFM results, FRR and fouling resistance data indicate that M4 (Sa ¼ 9.1 nm) is the optimal membrane that we have configured (Figure 7(c)).…”

Section: Membrane Morphologiesmentioning

confidence: 84%

Designing of a novel polyvinylidene fluoride/TiO2/UiO-66-NH2 membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework

Chen

Liu

et al. 2021

Water Science and Technology

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Novel polyvinylidene fluoride/TiO2/UiO-66-NH2 (PVDF/TiUN) membranes were produced by the delay phase separation method via introducing the TiO2/UiO-66-NH2 (TiUN) nanocomposite into PVDF casting solution. Interconnection of TiO2 and UiO-66-NH2 improved photocatalysis capacity and endowed PVDF/TiUN membranes with self-cleaning capability. Quantitative measurements showed that, firstly, PVDF/TiUN membranes exhibited improved photodegradation kinetics and efficiency (up to 88.1%) to Rhodamine B (RhB). Secondly, the performances of bovine serum albumin (BSA) rejection and permeation of PVDF/TiUN membranes outperformed those of other check samples, indicating enhanced hydrophilicity. Thirdly, rejection rate of BSA reached to breathtaking 98.14% and flux recovery ratio (FRR) of BSA reached breathtaking 95.37%. Thus, given their excellent anti-contamination property and separation performance, the PVDF/TiUN membrane is very likely to be a novel water treatment membrane.

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Metal-organic framework/zeolite nanocrystal/polyvinylidene fluoride composite ultrafiltration membranes with flux/antifouling advantages

Cited by 45 publications

References 100 publications

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

Recent Improvement Strategies on Metal-Organic Frameworks as Adsorbent, Catalyst, and Membrane for Wastewater Treatment

High Performance Copper Based Metal Organic Framework for Removal of Heavy Metals From Wastewater

Designing of a novel polyvinylidene fluoride/TiO2/UiO-66-NH2 membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework

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