Tuning interlayer structure to construct steady dual-crosslinked graphene oxide membranes for desalination of hypersaline brine via pervaporation

Wang, Ziheng; Sun, Jiawei; Li, Na; Qin, Yingzhe; Qian, Xiaowei; Xie, Zongli

doi:10.1016/j.seppur.2022.120459

Cited by 40 publications

(6 citation statements)

References 44 publications

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“…Apart from this application, the authors found that such membranes were able to display acceptable heavy metal adsorption toward uranium. Using polyethyleneimine as a crosslinker, Wang et al [ 61 ] tuned the interlayer spacing of a lamellar GO membrane for the desalination of hypersaline brine. Impressively, the resultant crosslinked GO membrane showed a permeation flux of 86 kg∙m −2 h −1 and a salt rejection rate of 99.99% in filtrating a 10 wt.% NaCl hypersaline solution (at 90 °C).…”

Section: Ongoing Studies In 2d Materials For Composite Pv Membrane Fa...mentioning

confidence: 99%

Composite 2D Material-Based Pervaporation Membranes for Liquid Separation: A Review

Castro-Muñoz

2024

Molecules

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Today, chemistry and nanotechnology cover molecular separations in liquid and gas states by aiding in the design of new nano-sized materials. In this regard, the synthesis and application of two-dimensional (2D) nanomaterials are current fields of research in which structurally defined 2D materials are being used in membrane separation either in self-standing membranes or composites with polymer phases. For instance, pervaporation (PV), as a highly selective technology for liquid separation, benefits from using 2D materials to selectively transport water or other solvent molecules. Therefore, this review paper offers an interesting update in revising the ongoing progress of PV membranes using 2D materials in several applications, including solvent purification (the removal of water from organic systems), organics removal (the removal of organic molecules diluted in water systems), and desalination (selective water transport from seawater). In general, recent reports from the past 3 years have been discussed and analyzed. Attention has been devoted to the proposed strategies and fabrication of membranes for the inclusion of 2D materials into polymer phases. Finally, the future trends and current research gaps are declared for the scientists in the field.

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Section: Ongoing Studies In 2d Materials For Composite Pv Membrane Fa...mentioning

confidence: 99%

Composite 2D Material-Based Pervaporation Membranes for Liquid Separation: A Review

Castro-Muñoz

2024

Molecules

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“…Polyethyleneimine (PEI) is one of the most commonly used polymers for regulating the interlayer structure of GOMs because of its abundant amino group, excellent hydrophilicity, and large positive charge, and its special long-chain structure allows for the simultaneous attachment and fixation of multiple GO nanosheets. Wang et al used PEI-cross-linked GO nanosheets of different molecular weights and adjusted the interlayer spacing of the layered GO membranes to desalinate hypersaline through permeation vaporization (PV) [ 19 ]. Between PEI and GO, the electrostatic interaction and covalent bonding formed a double cross-linked structure, which effectively limited the dissolution of GO and allowed for interlayer spacing to be adjusted through adjustments to the molecular weight of PEI and conversion of the surface charge of the GOM to a positive charge, thus repelling ions ( Figure 8 c).…”

Section: Regulation Of Gom Mass Transfer Pathwaysmentioning

confidence: 99%

“…( c ) Schematic diagram of the process for PEI-cross-linked GO nanosheets. Reproduced from [ 19 ] permission of Elsevier, 2022. ( d ) LBL method used to prepare a PVA-intercalated GOM.…”

Section: Figurementioning

confidence: 99%

“…Two-dimensional graphene oxide (GO), rich in oxygen-containing groups on lamellar planes and edges, maintains excellent hydrophilicity and solubility in aqueous solution, which achieves preferential adsorption of water molecules and provides the possibility of membrane preparation under mild conditions. The 2D nanochannels formed by the stacking of GO nanosheets can enable ultrafast transport of water molecules and hinder the passage of ions [ 19 ]. The degree of oxidation of GO is usually 40–60% [ 20 ] and the thickness of a single layer of GO is approximately 1 nm, with lateral dimensions of the layer in the micron range [ 21 ].…”

Section: Introductionmentioning

confidence: 99%

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GO-Based Membranes for Desalination

Huo

Gao

et al. 2023

Membranes

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Graphene oxide (GO), owing to its atomic thickness and tunable physicochemical properties, exhibits fascinating properties in membrane separation fields, especially in water treatment applications (due to unimpeded permeation of water through graphene-based membranes). Particularly, GO-based membranes used for desalination via pervaporation or nanofiltration have been widely investigated with respect to membrane design and preparation. However, the precise construction of transport pathways, facile fabrication of large-area GO-based membranes (GOMs), and robust stability in desalination applications are the main challenges restricting the industrial application of GOMs. This review summarizes the challenges and recent research and development of GOMs with respect to preparation methods, the regulation of GOM mass transfer pathways, desalination performance, and mass transport mechanisms. The review aims to provide an overview of the precise regulation methods of the horizontal and longitudinal mass transfer channels of GOMs, including GO reduction, interlayer cross-linking, intercalation with cations, polymers, or inorganic particles, etc., to clarify the relationship between the microstructure and desalination performance, which may provide some new insight regarding the structural design of high-performance GOMs. Based on the above analysis, the future and development of GOMs are proposed.

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“…Until now, making use of additives in the aqueous phase has been considered an effective and simple method to regulate the IP process. Incorporating porous materials and inorganic nanomaterials such as graphene oxide (GO), carbon nanotubes (CNTs), metal–organic frameworks (MOFs), and covalent organic frameworks (COFs) to PA skin has been extensively investigated. However, the compatibility of most nanomaterials with the PA layer is poor, resulting in the limited performance improvement and poor stability of the NF membranes.…”

Section: Introductionmentioning

confidence: 99%

Thin-Film Composite Nanofiltration Membrane Modified by Fulvic Acid to Enhance Permeability and Antifouling Performance

et al. 2022

Ind. Eng. Chem. Res.

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A novel thin-film composite (TFC) nanofiltration (NF) membrane was manufactured by interfacial polymerization (IP) with addition of the additive fulvic acid (FA) into the piperazine (PIP) aqueous solution onto a poly(m-phenylene isophthalamide) (PMIA) substrate. The aqueous phase additive FA can effectively modify the PA layer structure by slowing down the diffusion of the PIP monomer and reacting with trimesoyl chloride (TMC) to generate ester groups. The pure water permeability (PWP) of the optimized NF membrane enhanced from 10.4 to 22.3 L m −2 h −1 bar −1 , and the Na 2 SO 4 rejection remained above 97.8%. The outstanding performance benefited from superior hydrophilicity, enlarged pores, and a relatively thin separation layer. Furthermore, the obtained NF membrane presented ascendant thermal stability, long-term stability, and fouling resistance. Therefore, this work offers novel insight into regulation of the PA layer structure and promotion of NF membrane performance.

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Tuning interlayer structure to construct steady dual-crosslinked graphene oxide membranes for desalination of hypersaline brine via pervaporation

Cited by 40 publications

References 44 publications

Composite 2D Material-Based Pervaporation Membranes for Liquid Separation: A Review

Composite 2D Material-Based Pervaporation Membranes for Liquid Separation: A Review

GO-Based Membranes for Desalination

Thin-Film Composite Nanofiltration Membrane Modified by Fulvic Acid to Enhance Permeability and Antifouling Performance

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