Stable Forward Osmosis Nanocomposite Membrane Doped with Sulfonated Graphene Oxide@Metal–Organic Frameworks for Heavy Metal Removal

He, Miaolu; Wang, Lei; Zhang, Zhe; Zhang, Yan; Zhu, Jiwei; Wang, Xudong; Lv, Yongtao; Miao, Rui

doi:10.1021/acsami.0c17405

Cited by 70 publications

(20 citation statements)

References 67 publications

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“…Water scarcity is an important global issue, and membrane-based processes play an essential role in solving this issue. , Forward osmosis (FO) membrane-based technology has recently been considered a promising technological approach for drinking water production. − In this process, natural osmotic pressure between the feed (FS) and draw solutions (DS) acts as a driving force . Hence, in comparison to other conventional pressure-driven membrane processes (PDMPs), that is, nanofiltration and reverse osmosis (RO), FO does not require external hydraulic pressure. , In addition, the FO process exhibits many potential advantages, such as high water recovery, easy operation, and low fouling tendency compared to these PDMPs .…”

Section: Introductionmentioning

confidence: 99%

Polyethersulfone–Quaternary Graphene Oxide–Sulfonated Polyethersulfone as a High-Performance Forward Osmosis Membrane Support Layer

2022

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The stability and compatibility of a nanomaterial in a substrate matrix are a tough challenge in preparing thin-film nanocomposite membranes. In this study, we fabricated a ternary nanocomposite membrane substrate consisting of polyethersulfone (PES), quaternary graphene oxide (QGO), and sulfonated polyethersulfone (SPES). First, SPES was blended with the PES substrate, and then different concentrations of QGO were incorporated within this substrate. The effect of QGO on the substrate morphology, hydrophilicity, and porosity was analyzed via scanning electron microscopy, water contact angle measurement, and gravimetric methods, respectively. The optimum loading of QGO significantly enhanced the hydrophilicity, porosity, and water permeability of the PES/SPES support layer. In addition, the effect of QGO on the polyamide rejection layer morphology and performance was thoroughly investigated. The result shows that a thin, smooth, and defect-free polyamide (PA) layer was formed on hydrophilic QGO-based substrates. Intrinsic separation performance data verified these results, where the PA layer formed on the QGO-based substrate presented the highest water permeability. The forward osmosis test also demonstrated the positive impact of QGO incorporation on the performance of membrane substrates. The optimal TFC-QS0.5 (containing 0.5 wt % of QGO) membrane has a water flux of 24.4 LMH in the forward osmosis mode and 32.1 LMH in the pressure-retarded osmosis mode when using a 1 M NaCl draw solution and deionized water feed solution.

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Section: Introductionmentioning

confidence: 99%

Polyethersulfone–Quaternary Graphene Oxide–Sulfonated Polyethersulfone as a High-Performance Forward Osmosis Membrane Support Layer

2022

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“…The static adsorption capacities of several heavy metal ions on the synthesized PES/PDA membrane were 20.23 mg Pb 2+ /g, 17.01 mg Cd 2+ /g, and 10.42 mg Cu 2+ /g, around 1.69, 2.25, and 1.91 times higher, respectively, than those on a conventional PDA-decorated membrane. He et al [37] modified a thin-film nanocomposite (TFN) membrane with a sulfonated graphene oxide (GO)/metal-organic framework (SGO/UiO-66TFN), to remove heavy metal ions and improve membrane stability. Figure 6b shows the heavy metal ion removal and antifouling mechanism of the thin-film composite (TFC), UiO-66TFN, and SGO/UiO-66TFN.…”

Section: Advantages Of Fo Water Treatmentmentioning

confidence: 99%

A Comprehensive Review on Forward Osmosis Water Treatment: Recent Advances and Prospects of Membranes and Draw Solutes

Zhu

Chen

et al. 2022

IJERPH

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Forward osmosis (FO) is an evolving membrane separation technology for water treatment and reclamation. However, FO water treatment technology is limited by factors such as concentration polarization, membrane fouling, and reverse solute flux. Therefore, it is of a great importance to prepare an efficient high-density porous membrane and to select an appropriate draw solute to reduce concentration polarization, membrane fouling, and reverse solute flux. This review aims to present a thorough evaluation of the advancement of different draw solutes and membranes with their effects on FO performance. NaCl is still widely used in a large number of studies, and several general draw solutes, such as organic-based and inorganic-based, are selected based on their osmotic pressure and water solubility. The selection criteria for reusable solutes, such as heat-recovered gaseous draw, magnetic field-recovered MNPs, and electrically or thermally-responsive hydrogel are primarily based on their industrial efficiency and energy requirements. CA membranes are resistant to chlorine degradation and are hydrophilic, while TFC/TFN exhibit a high inhibition of bio-adhesion and hydrolysis. AQPs are emerging membranes, due to proteins with complete retention capacity. Moreover, the development of the hybrid system combining FO with other energy or water treatment technologies is crucial to the sustainability of FO.

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“…The IP layer effectively protects the MOF layer and provides support. [ 74 ] The schematic illustration of IP for the synthesis of the PA membrane is shown in Figure a. UiO‐66 was embedded on the PA substrate by IP to improve the surface properties of TFN membrane surfaces.…”

Section: Fabrication Of Mof Membranesmentioning

confidence: 99%

Metal–Organic Framework Membranes: Advances, Fabrication, and Applications

Jia

Wang

et al. 2022

Small Structures

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Metal-organic frameworks (MOFs) are porous crystal frameworks constructed by metal clusters and bridging organic ligands. [1] This class of materials not only has a highly tunable and regular pore structure, variable functionality, and internal connectivity, [2] but the superior designability enables them to accommodate the introduction of a variety of functional sites on frames, cavities, and channels. [3] These make them have important applications in many fields, including drug delivery, [4] adsorption, [5] antimicrobials, [6] electron conduction, [7] gas storage, [8] catalysis, [9] sensing, [10] and energy conversion. [11] MOFs were first developed by Hoskins and Robson via connecting discrete metal clusters and reappraising the Zn(CN) 2 and Cd(CN) 2 structure [12] and then termed MOFs in 1995. [13] Recent researches focus on the modulation of MOF chemistry to expending our understanding of the relationship between the MOFs structure, function, and applications. However, the poor adhesion and heterogeneous distribution of powdery MOFs hindered their detection in many applications. So, the development of the commercialization of MOFs was limited. [14] Membrane is a kind of material with small pore size and large specific surface area. [15] A series of structural features facilitate its rapid transfer of matters with the action of external driving forces in the field of biomedical, [16] energy storage, [17] and environmental protection. [18] The preparation of MOFs into membranes will play their role to the maximum extent [14,19] and endow more precisely pore size, pore structure, and molecular-/ion-specific groups with the membranes. [20] MOF membranes are mainly divided into two categories: pure MOF membranes and MOF/polymer hybrid membranes. Pure MOF membranes are the continuous thin layers of MOFs that are formed by growing (or depositing) on a porous support layer and/or inorganic substrate or a porous polymer substrate. These kinds of MOF membranes have the advantages of good thermal stability, high mechanical property, antifouling, antiswelling, and controllable pore structure. [21] As pure MOF membranes are composed of MOFs, the permeability and selectivity are completely determined by the pore sizes of MOFs, which endow pure MOF membranes with significant selectivity. [22] Pure MOF membranes should have the best performance in theory. However, their brittle texture, high cost, and difficulty in chemical modification still limit their practical applications. MOF/polymer hybrid membranes are composite materials that are composed of a dispersed phase (MOFs) and a continuous phase (polymer or another flexible matrix). There are two forms: MOFs embedded in the polymer matrix and MOFs on the surface of the flexible substrate. The thickness is much thicker than the diameter of the embedded porous MOFs; thus, the doped MOFs are surrounded by the polymer matrix. In this case, the selectivity and permeability of the MOF/polymer hybrid membranes are significantly dependent on the properties of the

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Stable Forward Osmosis Nanocomposite Membrane Doped with Sulfonated Graphene Oxide@Metal–Organic Frameworks for Heavy Metal Removal

Cited by 70 publications

References 67 publications

Polyethersulfone–Quaternary Graphene Oxide–Sulfonated Polyethersulfone as a High-Performance Forward Osmosis Membrane Support Layer

Polyethersulfone–Quaternary Graphene Oxide–Sulfonated Polyethersulfone as a High-Performance Forward Osmosis Membrane Support Layer

A Comprehensive Review on Forward Osmosis Water Treatment: Recent Advances and Prospects of Membranes and Draw Solutes

Metal–Organic Framework Membranes: Advances, Fabrication, and Applications

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