Superhydrophobic/Superoleophilic MOF Composites for Oil–Water Separation

Gao, Ming-Liang; Zhao, Siyu; Chen, Zhiyan; Liu, Lin; Han, Zheng‐Bo

doi:10.1021/acs.inorgchem.8b03293

Cited by 107 publications

(53 citation statements)

References 44 publications

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“…Crystals, nanosheets and powders of hydrophobic MOFs have been utilized to design oil/water ltration systems. 21,54,[90][91][92][93][94] All the MOFs belonging to this class have a hydrophobic character generated by highly alkylated, arylated or uorinated linkers. These linkers can either function as hydrophobic MOF constituents or can be installed via post-synthetic modication.…”

Section: Filtration Materialsmentioning

confidence: 99%

“…Interestingly, some hydrophobic MOFs can be employed not only for oil/water ltration, but also as absorbent materials for separating oils from water. 91,94 Such materials are benecial owing to their dual utilization.…”

Section: Pristine Mof-based Oil Absorbentsmentioning

confidence: 99%

“…Another attempt at designing dual-functionality MOFs was made by Gao and coworkers by postsynthetically modifying MIL-101(Cr) (Cr 3 O(H 2 O) 2 X(BDC) 3 with X ¼ OH À or F À ) with octadecylamine (OA). 91 Owing to the low surface energy of OA, the modied MOF (S-MIL-101) exhibited superhydrophobicity (WCA ¼ 156 ). In addition, the superoleophilicity of S-MIL-101(Cr) inspired the authors to evaluate its absorption capacity for various organic solvents, which was measured to be 142-399 wt%.…”

Section: Pristine Mof-based Oil Absorbentsmentioning

confidence: 99%

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Hierarchical porous metal–organic framework materials for efficient oil–water separation

et al. 2022

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Section: Filtration Materialsmentioning

confidence: 99%

Section: Pristine Mof-based Oil Absorbentsmentioning

confidence: 99%

Section: Pristine Mof-based Oil Absorbentsmentioning

confidence: 99%

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Hierarchical porous metal–organic framework materials for efficient oil–water separation

et al. 2022

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“…The higher demand for effective sorbents with less environmental impact led to the development of many porous structures with high surface area to mass ratio (Lin et al, 2012;Wu et al, 2012;Lei et al, 2013;Khosravi and Azizian, 2015;Bu et al, 2019;Shin et al, 2019;Shahmirzaee, M., et al Advances in Geo-Energy Research 2019, 3(3): 320-342 Wang et al, 2019;Xu et al, 2019;Zhang et al, 2019b). Porous metal organic frameworks (MOFs) nanomaterials by virtue of their hierarchical porous structures, superhydrophobicity, rich functionalities, low cost, and suitability for large scale application have attracted attention in oil spill cleanup (Jayaramulu et al, 2017;Yoon et al, 2017;Gao et al, 2019;Kumar et al, 2019;Xu et al, 2019aXu et al, , 2019b. Zeolitic imidazolate frameworks (ZIFs) are a group of MOFs.…”

Section: Introductionmentioning

confidence: 99%

A review on zeolitic imidazolate frameworks use for crude oil spills cleanup

Shahmirzaee

Hemmati-Sarapardeh

Husein

et al. 2019

Adv. Geo-Energ. Res.

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Oil spills are a global concern by virtue of their distractive effects on the ecosystem. Many studies have examined the use of porous materials as sorbents for contaminants from different polluted waters. For example, hydrophobic metal organic frameworks, especially zeolitic imidazolate frameworks (ZIFs) with high porosity, have attracted lots of attention. ZIFs are a subclass of metal organic frameworks and display an excellent performance toward oil/water separation compared with other porous materials. Nevertheless, the performance of ZIFs toward oil spills cleanup has not been reviewed. Accordingly, this article overviews the different methods for ZIF preparation, their corresponding structure, and their various applications as sorbents and in particular, recent developments in cleaning up oil spills with meso and micro-porous ZIFs. The investigation of the literatures revealed that the effective parameters on the performance of porous ZIFs are specific surface area, pore diameters of ZIF, and the size of cavities due to interconnecting of ZIF particles. The ZIF-8 with a high surface area of 1408 m 2 /g and 1384.2 m 2 /g and adsorption capacity up to 3000 mg/g was studied more than the other ZIF structures. Models predications revealed the maximum adsorption capacity of 6633 mg/g for ZIF-8. Recently, investigations focused on carbonitride foam and melamine sponge as templates of ZIF powder. In comparison with synthesis methods, dip coating as a facial synthesis method was introduced for production and anchoring ZIF particles on the substrate. The recyclability of crude oil and the reusability of the ZIF sorbents are highlighted. Moreover, this article reviews recent developments of ZIFs synthesis, current challenges, and prospects for the use of ZIFs in oil/water separation. The findings of this study can help to better understand widespread applications of ZIFs, effective features of a sorbent, and methods to improve adsorption capacity. As cleaning up oil spills is known as an important issue, this is the first study on ZIFs in particular oil/water separation which provides a summary of researches in a simple form along with recent developments compared to published reviews.

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“…[53][54][55][56][57][58][59][60] Typically, desired wetting properties in MOFs were mostly chemically induced by postsynthesis modification or by including building blocks decorated with hydrocarbon side chains. [60][61][62][63][64] Very recently, a copper mesh decorated with hybrid Cu(OH) 2 / MOF nanobrushes showed wetting properties with contact angles suggesting superoleophobic properties. 65 Therefore, the use of well-defined thin MOF films as target architectures for encoding on-surface wetting properties is yet to be revealed.…”

mentioning

confidence: 99%

Nanostructured and Oriented Metal-Organic Framework Films enabling Extreme Surface Wetting Properties

Mähringer¹,

Rotter²,

Medina³

2019

Preprint

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Herein, we report on the synthesis of highly oriented and nanostructured metal-organic framework (MOF) films featuring extreme surface wetting properties. The Ni- and Co- derivatives of the metal-catecholate series (M-CAT-1) were synthesized as highly crystalline bulk materials and thin films. Oriented pillar-like nanostructured M-CAT-1 films exhibiting pronounced needlelike morphology on gold substrates were established by incorporating a crystallization promoter into the film synthesis. These nanostructured M-CAT-1 MOF films feature extreme wetting phenomena, specifically superhydrophilic and underwater superoleophobic properties with water and underwater oil-contact angles of 0º and up to 174º, respectively. Self-cleaning capabilities for the nanostructured, needle-like M-CAT-1 films were illustrated by measuring time-dependent oil droplet rolling-off a tilted surface. The deposition of the nanostructured Ni-CAT-1 on large glass substrates allowed for the realization of an efficient transparent anti-fog coating enabling a clear view even at extreme temperature gaps up to ca. 120 ºC. This work illustrates the strong link between MOF film morphology and induced surface properties based on these framework materials.

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Superhydrophobic/Superoleophilic MOF Composites for Oil–Water Separation

Cited by 107 publications

References 44 publications

Hierarchical porous metal–organic framework materials for efficient oil–water separation

Hierarchical porous metal–organic framework materials for efficient oil–water separation

A review on zeolitic imidazolate frameworks use for crude oil spills cleanup

Nanostructured and Oriented Metal-Organic Framework Films enabling Extreme Surface Wetting Properties

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