Robust Superhydrophobic/Superoleophilic Wrinkled Microspherical MOF@rGO Composites for Efficient Oil–Water Separation

Gu, Jiahui; Fan, Hongwei; Li, Chunxi; Caro, Jürgen; Meng, Hong

doi:10.1002/anie.201814487

Cited by 198 publications

(101 citation statements)

References 62 publications

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“…Based on the principles mentioned above, novel materials were invented and fabricated as proof‐of‐concept. Oil–water separators are generally porous meshes, foams and sponges made from a wide range of materials, including metal, polymers, ceramics, fabrics, cellulose‐based derivatives, particles, and novel nanomaterials . Recently, Wang et al reported a highly compressible wood sponge with spring‐like lamellar structure (Figure b–d), which was fabricated by sequential chemical treatment, freeze drying and chemical vapor deposition of natural balsa wood.…”

Section: Applicationsmentioning

confidence: 99%

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Duan

Zheng

Zhao

et al. 2019

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Understanding the relationship between liquid manipulation and micro‐/nanostructured interfaces has gained much attention due to the wide potential applications in many fields, such as chemical and biomedical assays, environmental protection, industry, and even daily life. Much work has been done to construct various materials with interfacial liquid manipulation abilities, leading to a range of interesting applications. Herein, different fabrication methods from the top‐down approach to the bottom‐up approach and subsequent surface modifications of micro‐/nanostructured interfaces are first introduced. Then, interactions between the surface and liquid, including liquid wetting, liquid transportation, and a number of corresponding models, together with the definition of hydrophilic/hydrophobic, oleophilic/olephobic, the definition and mechanism of superwetting, including superhydrophobicity, superhydrophilicity, and superoleophobicity, are presented. The micro‐/nanostructured interface, with major applications in self‐cleaning, antifogging, anti‐icing, anticorrosion, drag‐reduction, oil–water separation, water collection, droplet (micro)array, and surface‐directed liquid transport, is summarized, and the mechanisms underlying each application are discussed. Finally, the remaining challenges and future perspectives in this area are included.

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Section: Applicationsmentioning

confidence: 99%

Micro‐/Nanostructured Interface for Liquid Manipulation and Its Applications

Duan

Zheng

Zhao

et al. 2019

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“…To date, the synthetic strategies toward this aim include: i) forming mixed matrix membranes by doping pre‐synthesized MOFs; ii) forming metal–organic gels through sol–gel processes; and iii) employing 2D/3D structured supports for loading MOF particles . However, these approaches lack control over the organization of the MOFs inside the support, resulting in severe MOF aggregation, low MOF contents (usually <30 %), ill‐defined hierarchical porosity, and poor formability of the support.…”

Section: Introductionmentioning

confidence: 99%

A Spiderweb‐Like Metal–Organic Framework Multifunctional Foam

et al. 2020

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Processing metal–organic frameworks (MOFs) into hierarchical macroscopic materials can greatly extend their practical applications. However, current strategies suffer from severe aggregation of MOFs and limited tuning of the hierarchical porous network. Now, a strategy is presented that can simultaneously tune the MOF loading, composition, spatial distribution, and confinement within various bio‐originated macroscopic supports, as well as control the accessibility, robustness, and formability of the support itself. This method enables the good dispersion of individual MOF nanoparticles on a spiderweb‐like network within each macrovoid even at high loadings (up to 86 wt %), ensuring the foam pores are highly accessible for excellent adsorption and catalytic capacity. Additionally, this approach allows the direct pre‐incorporation of other functional components into the framework. This strategy provides precise control over the properties of both the hierarchical support and MOF.

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“…Interestingly, the co-optimization of appropriate hierarchical topography and low surface energy chemistry on macro-scale (porous/featureless) objects (that are visible with the naked eye) is imperative for achieving bioinspired extreme liquid wettability. [6][7][8][9][10][11][12][13][14][15] In the past, various porous and bulk substrates including polyurethane sponge, brous cotton and melamine formaldehyde sponge, were endowed with superhydrophobicity for achieving a very high oil absorption capacity. [16][17][18][19][20][21] In general, such materials, with a very high absorption capacity, were appropriate for removing the oating and sediment bulk oil phase from aqueous media.…”

Section: Introductionmentioning

confidence: 99%