Graphene oxide assisted assembly of superhydrophilic MOF-based membrane with 2D/3D hybrid nanochannels for enhanced water purification

Fei, Lingya; Chen, Cheng; Shen, Liguo; Zhang, Yuyao; Wang, Boya; Xu, Jiujing; Li, Bisheng; Raza, Saleem; Lin, Hongjun

doi:10.1016/j.cej.2023.141694

Cited by 33 publications

(4 citation statements)

References 59 publications

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“…[21] This MOF possesses fascinating superhydrophilicity resulting from the abundant polar group (like amino and hydroxyl groups), making it suitable for membrane fabrication, which has been proved in our previous studies. [17] Due to the structural similarity between MIP-202(Zr) and the MOFs in the established UiO-66(Zr) family, [22] a similar defect engineering strategy was expected to introduce defects into MIP-202(Zr). Among various strategies, utilizing monocarboxylic acids to generate defects has emerged as a frequently utilized approach.…”

Section: Mof Preparation and Defect Formationmentioning

confidence: 99%

“…[14] MIP-202(Zr) (MIP represents the Materials of the Institute of Porous Materials from Paris) is a newly developed biocompatible 𝛼-amino acid-based Zr-MOF with a facile synthesis process, excellent hydrophilicity, and superior chemical stability, which have also been firstly reported in membrane fabrication in our previously reported work. [17] Herein, inspired by biological structures (such as animal arms with rigid and flexible structures), rigid MIP-202(Zr) and defective MIP-202(Zr) (D-MIP-202(Zr)) were first grown in situ on a flexible graphene oxide (GO) sheet, and then a rigid-flexible coupled MOF-based hybrid membrane with 99 wt% MOF was constructed by vacuum filtration assisted self-assembly. The defects were also introduced by adding acetic acid.…”

Section: Introductionmentioning

confidence: 99%

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Assembling 99% MOFs into Bioinspired Rigid‐Flexible Coupled Membrane with Significant Permeability: The Impacts of Defects

Fei,

Shen,

Chen

et al. 2023

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Assembling metal‐organic frameworks (MOFs) into high‐performance macroscopic membranes is crucial but still challenging. MOF‐containing hybrid membranes can effectively integrate the advantages of flexible guest materials and MOFs. Nevertheless, the inherent limitations in fully harnessing the distinct characteristics of MOFs persist due to the substantial guest material content necessitated in membrane fabrication. Herein, inspired by the rigid and flexible structures in biological systems, rigid MIP‐202(Zr) and defective MIP‐202(Zr) (D‐MIP‐202(Zr)) modified flexible graphene oxide (GO) sheets are synthesized in situ and then assembled into a rigid‐flexible coupled MOF‐based membrane. The defects in D‐MIP‐202(Zr) are introduced by using acetic acid as the modulation agent. The obtained GO@MIP‐202(Zr) membrane possesses a hierarchical porous structure with a 99 wt% MOF proportion, which is higher than the GO@D‐MIP‐202(Zr) (75 wt%) membrane with a compact bulge‐structured surface. The water permeability of the GO@MIP‐202(Zr) membrane attains remarkedly 5762.92 L h−1 m−2 bar−1, which is 960 and 2.6 times higher than that of the GO membrane and GO@D‐MIP‐202(Zr) membrane. Additionally, benefiting from the superhydrophilicity and underwater superoleophobicity, the resultant membrane not only demonstrates high rejection for oil‐water emulsions but also exhibits exceptional recyclability and anti‐fouling ability. These findings provide valuable insights into the assembly of MOFs into high‐performance membranes.

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Section: Mof Preparation and Defect Formationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assembling 99% MOFs into Bioinspired Rigid‐Flexible Coupled Membrane with Significant Permeability: The Impacts of Defects

Fei,

Shen,

Chen

et al. 2023

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“…Metalorganic frameworks (MOFs), as emerging porous crystalline materials, have been widely studied for their high porosity, designable structure, and adjustable pore size, which allows them to accurately regulate the GO layer spacing [26][27][28] . The introduction of MOFs into graphene nanosheets to form hybrid structures has recently attracted attention [29,30] . For example, Jiang et al added FECUBDC bimetallic MOFs to GO nanosheets, which increased the interlayer spacing of the GO composite membrane and improved the efficiency of dye wastewater treatment [31] .…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide membranes using MOF@Chitosan core-shell nanoparticles as dual modulators for dye separation

Wang,

Guo,

Cui

et al. 2024

Chem Synth

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Graphene oxide (GO) membranes hold significant promise for the water purification. However, they also face the problem of structural swelling, which limits their use in water treatment applications. In this work, a novel dual-modulated core-shell metal-organic framework@Chitosan (MOF@CS) was successfully synthesized and used as an intercalation cross-linker to optimize the interlayer spacing and stability of GO membranes. Molecular dynamics simulation confirms that MOF@CS, acting as an intercalator, accelerates the water diffusion rate within the channels of the GO layer compared to a pure GO layer. At the same time, Fourier Transform Infrared Spectroscopy analysis reveals that MOF@CS serves as a cross-linker for covalently cross-linking the GO layer. The nanofiltration performance and stability of the improved MOF@CS-GO composite membranes were significantly enhanced. Compared to the pure GO membranes, the MOF@CS-GO composite membranes exhibited enhanced Congo red rejection rates (from 76.5% to 95.6%) while maintaining a high pure water flux (34.5 L·m-2·h-1·bar-1) and good structural stability (stable dye removal performance over 120 h). This dual regulation strategy is expected to effectively solve the swelling problem of GO membranes in aqueous media and open up avenues for advancing their performance.

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“…Graphene (GR) has attracted widespread attention in many fields owing to its superior electrical conductivity, significant electron transport capability, ultrahigh specific surface area, and good chemical stability . Recent studies have shown that composites of MOFs and GR can integrate the advantages of various components, enabling the composites to have better stability and high conductivity. − The unique structure of GR provides a variety of sites for coupling with MOFs. Moreover, the carboxyl group of GR is able to enhance the coordination bond and guide the growth of MOF to form a more favorable structure.…”

Section: Introductionmentioning

confidence: 99%

CoNi–MOF–Graphene Magnetic Nanocomposites for the Electrocatalytic Detection of Glucose and the Efficient Removal of Organic Dyes

Peng

Zhou

Dong

et al. 2023

ACS Appl. Nano Mater.

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The design of a nanocomposite with electrocatalytic activity and recyclable development for the detection of small biomolecules and the removal of environmental pollutants has received enormous attention. A magnetic nanocomposite was synthesized by the hydrothermal approach comprising two building units: metal–organic frameworks (MOFs) and graphene (GR). GR accumulated organic ligands through the large specific surface area and cobalt (Co) and nickel (Ni) served as coordination ions to seamlessly connect with the former for forming CoNi–MOFs–GR (CNMs–GR) to improve the conductivity of MOFs and the electrocatalytic activity of GR. The nanocomposite was utilized to construct an electrochemical sensing platform for the detection of glucose in human blood serum and the removal of organic dyes (methylene blue (MB), congo red (CR), and neutral red (NR)) in water. The CNMs–GR-modified electrode exhibited good electrochemical performance toward glucose in a wide linear range of 10–2900 μM with a detection limit of 1.27 μM. The maximum uptake capacity of CNMs–GR for MB, CR, and NR was 184.29, 912.47, and 894.36 mg/g, respectively. Most obviously, this work provided a strategy for the design of an effective bifunctional nanocomposite, which not only demonstrated the enormous potential for detection of glucose but also realized the removal of organic dyes.

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Graphene oxide assisted assembly of superhydrophilic MOF-based membrane with 2D/3D hybrid nanochannels for enhanced water purification

Cited by 33 publications

References 59 publications

Assembling 99% MOFs into Bioinspired Rigid‐Flexible Coupled Membrane with Significant Permeability: The Impacts of Defects

Assembling 99% MOFs into Bioinspired Rigid‐Flexible Coupled Membrane with Significant Permeability: The Impacts of Defects

Graphene oxide membranes using MOF@Chitosan core-shell nanoparticles as dual modulators for dye separation

CoNi–MOF–Graphene Magnetic Nanocomposites for the Electrocatalytic Detection of Glucose and the Efficient Removal of Organic Dyes

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