MOF-derived LDH modified flame-retardant polyurethane sponge for high-performance oil-water separation: Interface engineering design based on bioinspiration

Piao, Junxiu; Lu, Mingjie; Ren, Jinyong; Wang, Yaofei; Feng, Tingting; Wang, Yaxuan; Jiao, Chuanmei; Chen, Xilei; Kuang, Shaoping

doi:10.1016/j.jhazmat.2022.130398

Cited by 55 publications

(14 citation statements)

References 65 publications

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“…Another MXene–MOF, Ti 3 C 2 Tx@ZIF-8, based membrane, was prepared, with significantly improved water flux (5347.36 L m –2 h –1 ) compared to previous membranes (Figure c) . In addition to graphene and MXenes, LDH@ZIF-67 (ZIF-67; Co(mIm) 2 , where mIm = 2-methyl imidazole) hybrids have been reported for oil–water adsorption capacity of 42–73 g/g and separation efficiency of 99.1% (Figure d) . However, the hybrids of other 2D materials with MOFs have not been extensively studied due to the lack of hydrophobicity and the difficulty in preparing suitable materials.…”

Section: Applicationsmentioning

confidence: 97%

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Hybrid Two-Dimensional Porous Materials

Jayaramulu,

Devi

2023

Chem. Mater.

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Metal–organic frameworks (MOFs) are crystalline materials that consist of metallic clusters and organic ligands with great potential for a diverse range of applications, including but not limited to gas separation and storage, electrocatalysis, water purification, batteries, and supercapacitors. However, their poor conductivity, inaccessible pores, and limited stability hinder their maximum utilization. To overcome these challenges, one solution to this problem is to integrate MOFs with two-dimensional (2D) materials, such as aminoclay, boron nitride, covalent–organic frameworks, graphene derivatives, layered double hydroxides, metal oxides, transition metal dichalcogenides, and transition metal carbides/nitrides, to create emerging multifunctional hybrid two-dimensional porous materials (denoted as H2DPMs) through primary or secondary bonding interactions. These H2DPMs benefit from a rich compositional versatility and tunable properties. Recent efforts have focused on integrating 2D materials with nano MOFs (0D, 1D, 2D, and 3D) to create hybrid materials with enhanced electro- and physicochemical properties, expanding the range of potential applications. H2DPMs have the potential to extract the best of both materials and could be a lucrative option for developing advanced materials. In this Perspective, we discuss the synthesis strategies, properties, challenges, and potential applications of H2DPMs materials. We also discuss the challenges and future directions for hybridizing of MOFs with 2D materials.

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Section: Applicationsmentioning

confidence: 97%

Section: Applicationsmentioning

confidence: 99%

Hybrid Two-Dimensional Porous Materials

Jayaramulu,

Devi

2023

Chem. Mater.

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“…The advancement of material civilization is inseparable from the fossil energy production, industrial manufacturing, engineering construction, home decoration, and other related sectors. − At the same time, there are also some problems such as marine oil pollution resulting from oil leakage from tankers or vessels, improper discharge of oily wastewater in industrial and daily activities, − as well as corrosion of metallic materials, − which not only cause significant economic losses and pose potential risks to people’s lives but also inflict substantial damage on the environment and greatly affected the Earth’s ecosystem. ,,− Therefore, it is significant to seek effective methods for the efficient separation of oil–water mixtures and improvement of anticorrosion of metals.…”

Section: Introductionmentioning

confidence: 99%

Facile and Rapid Fabrication of (trifluoropropyl) Silsesquioxanes/Ethyl Cyanoacrylate-Based Hybrid Superhydrophobic Coatings for Oil–Water Separation and Metal Anticorrosion

Zhang,

Ge,

Liu

2024

ACS Appl. Eng. Mater.

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In this paper, fluorosilsesquioxanes (F-SQs) were first synthesized by hydrolysis condensation of (3,3,3-trifluoropropyl) trimethoxysilane. Then, F-SQs were blended with ethyl cyanoacrylate (ECA) to prepare a hybrid matrix material that was coated on the surface of sponge or copper foil to rapidly form hydrophobic coatings by anionic polymerization of ECA, which were environmentally friendly, efficient, and low cost. The resulting low surface energy materials could be used for oil−water separation and metal corrosion protection. The structure composition and properties characterization of the surface of coated polyurethane (PU) sponges and copper foils were analyzed by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, water contact angle, and electrochemical tests. Coated PU sponges with excellent mechanical and chemical stability exhibit superhydrophobic properties and can efficiently separate oil and water mixtures with an efficiency over 99%. Compared with bare copper foil, the coated copper foil exhibited lower corrosion current (I corr ) and higher impedance modulus (|Z| 0.01 Hz ) after immersing in a 3.5 wt % NaCl solution for 24 h, offering excellent anticorrosion properties. Moreover, when the exposure time of the coating in salt solution was extended to 21 days, the |Z| 0.01 Hz of the coating remained approximately 10 times higher than that of the Cu matrix, demonstrating exceptional long-term corrosion resistance. This simple and environmentally friendly route to fabricate hydrophobic materials makes it possible for large-scale oil−water separation and metal corrosion protection.

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“…Studies have shown that LDH has great promise for applications in catalysis, − adsorption, − separation, , optics, capacitors, , and biomedicine. , In addition, LDH reduces the concentration of corrosive ions in the environment by trapping corrosive ions such as Cl – between its layers through its intrinsic ion exchange properties, further effectively improving the corrosion resistance of the coating. The two-dimensional layered structure of LDH nanosheets can also fill gaps in the coating, thus reducing the amount of defects and improving the self-healing performance of the coating .…”

Section: Introductionmentioning

confidence: 99%

“…11 This process generates positive charges, which is compensated by the interlayer channels with −OH or other anions to keep the charge balanced. Studies have shown that LDH has great promise for applications in catalysis, 13−15 adsorption, 16−18 separation, 19,20 optics, 21 capacitors, 22,23 and biomedicine. 24,25 In addition, LDH reduces the concentration of corrosive ions in the environment by trapping corrosive ions such as Cl − between its layers through its intrinsic ion exchange properties, further effectively improving the corrosion resistance of the coating.…”

Section: Introductionmentioning

confidence: 99%

Incorporation of Nanometer-Sized Layered Double Hydroxide with Anions that Improve the Corrosion Resistance of Epoxy Polymer

Li,

Cui,

et al. 2023

ACS Appl. Nano Mater.

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Layered double hydroxide (LDH) has been widely used as a two-dimensional nanomaterial in the corrosion protection of epoxy (EP) coatings due to its physical barrier properties and excellent ion exchange capacity. However, conventional LDH with an interlayer of NO3 – (LDH-NO3) is prone to failure in corrosive environments due to its limited ion exchange ability. It is demonstrated in this work that, compared to an EP coating containing LDH-NO3 (EP/LDH-NO3), EP coatings containing ZnAl-LDH-MoO4 2– (EP/LDH-MoO4) and ZnAl-LDH-PO4 3– (EP/LDH-PO4) have stronger corrosion resistance and self-healing abilities. This is attributed to the trapping effect of corrosion anions between the LDH layers by the inhibitor ions, which prevents the direct contact of the corrosion anions with the substrate. In addition, the inhibitor ions can combine with metal ions from the substrate to form insoluble complexes in localized corrosion areas, thus blocking further deterioration. Furthermore, EP/LDH-MoO4 has superior corrosion resistance and self-healing properties compared to EP/LDH-PO4, as the more active MoO4 2– anions have a stronger ion exchange ability than PO4 3–. This study not only highlights the potential of inhibitor ions inserted in LDH layers for anticorrosion but also paves the way toward the design of more effective EP-based coatings.

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MOF-derived LDH modified flame-retardant polyurethane sponge for high-performance oil-water separation: Interface engineering design based on bioinspiration

Cited by 55 publications

References 65 publications

Hybrid Two-Dimensional Porous Materials

Hybrid Two-Dimensional Porous Materials

Facile and Rapid Fabrication of (trifluoropropyl) Silsesquioxanes/Ethyl Cyanoacrylate-Based Hybrid Superhydrophobic Coatings for Oil–Water Separation and Metal Anticorrosion

Incorporation of Nanometer-Sized Layered Double Hydroxide with Anions that Improve the Corrosion Resistance of Epoxy Polymer

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