Nanofibrous metal–organic framework composite membrane for selective efficient oil/water emulsion separation

Cai, Yahui; Chen, Dongyun; Li, Najun; Xu, Qingfeng; Li, Hua; He, Jinghui; Lu, Jianmei

doi:10.1016/j.memsci.2017.08.047

Cited by 147 publications

(41 citation statements)

References 33 publications

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“…Porous MOFs have been investigated for gas storage and separation because of extremely high accessible internal surface area, tunable surface chemistry, and pore sizes in the range of the kinetic diameter of different gas molecules. [116] Copyright 2017, Elsevier. Sci.…”

Section: Gas Storage and Separationmentioning

confidence: 99%

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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organic linkers with a periodic, nanoscaled structure and ultrahigh surface areas. With their tunable pore/cage sizes, flexible skeleton, and large surface-to-volume ratio, [13][14][15][16][17][18][19] MOFs have a large potential for a wide range of applications, including gas storage and separation, rechargeable batteries, supercapacitors, solar cells, nanoreactors, heterogeneous catalysis, or drug delivery. [20][21][22][23][24][25][26][27] Recently, significant efforts have been devoted to the design and synthesis of new MOFs structures and the investigation of their physical or chemical properties. MOFs are generally prepared as bulk form through traditional hydrothermal or solvothermal synthesis. [28][29][30][31] In order to expand the application range, suitable pathways for the structuring of MOF powders into a functional architecture or devices are highly desirable.Currently, intensive efforts are focusing on the structuring of MOFs at the mesoscopic/macroscopic scale for the use as coatings, membranes, or sophisticated architectures in specific devices and applications. [32][33][34][35] A major difference in the structuring of MOFs into complex shapes compared to inorganic microporous materials, such as zeolites or silica, is the fact that most inorganic binders cannot be used for MOFs as these binders usually require heat treatment. The intrinsic fragility of MOFs needs to be considered which is related to the inorganic/organic hybrid character of this class of materials and the resulting limited thermal and mechanical stability. Alternatively, a more effective way to structure MOFs is the combination with polymer materials. The polymer which acts as a binder improves the mechanical flexibility and ensures chemical stability. Numerous methods have been developed for structuring MOF-polymer compositions including hard or soft templates, spin-or dip-coating, spray-drying, printing, or lithography approaches. [36][37][38] The integration of MOFs into a polymer matrix can result in poor MOF-polymer dispersion and compatibility issues owing to the different physical and chemical properties for the two kinds of materials and this is a challenge in some applications, e.g., in MOF-based mixed matrix membranes for gas separation. [39][40][41][42] The poor interfacial compatibility would lead to agglomeration of MOF particles, causing the formation of nonselective voids between the MOFs particles and the polymer.Electrospinning is a fabrication method to produce continuous ultrafine fibers with diameters in the range of a few tens of nanometers to a few micrometers in the form of nonwoven mats, yarns, etc. The mechanism of electrospinning is based Herein, recent developments of metal-organic frameworks (MOFs) structured into nanofibers by electrospinning are summarized, including the fabrication, post-treatment via pyrolysis, properties, and use of the resulting MOF nanofiber architectures. The fabrication and post-treatment of the MOF nanofiber architectures are described systematically by two routes: i) the dire...

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Section: Gas Storage and Separationmentioning

confidence: 99%

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

2019

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“…The combination of MOF and nanofiber properties can lead to new strategies for diverse designing of new modified structures with highly efficient adsorption properties that can be used in various fields, such as engineering, medicine, and environmental studies . To the best of our knowledge, in this paper we report the preparation of Ta‐MOF electrospun nanfibrous composite for the first time.…”

Section: Introductionmentioning

confidence: 99%

A novel composite derived from a metal organic framework immobilized within electrospun nanofibrous polymers: An efficient methane adsorbent

Sargazi¹,

Afzali

Mostafavi

et al. 2020

Applied Organom Chemis

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In this study, tantalum(V) metal organic framework (Ta‐MOF) nanostructure was incorporated within polyvinyl alcohol (PVA) nanofibers to prepare an electrospun porous composite as a novel CH4 adsorbent. The crystallinity, thermodynamic behavior, and textural properties of the products were investigated using instrumental analyses techniques. The results confirmed that the developed PVA/Ta‐MOF electrospun nanofibrous composite exhibits higher thermal stability, considerable porosity, and larger surface area compared to the parent Ta‐MOF. A 2k factorial design was used for systematic study of the adsorption process. The results of response surface methodology (RSM) optimization indicated that the highest methane adsorption can be achieved at 24.40 °C and 3.70 bar in 23.60 min. These nano pore sorbents showed a significant potential for CH4 adsorption due to the presence of Ta‐MOF at the surface of nanofibrous composite compared to many other conventional sorbents that have been already used. This study introduces a novel biocompatible/biodegradable nanofibrous composite material with high methane adsorption performance and potentials for other applications.

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“…Moreover, readers are recommended to infer the following articles for a comprehensive fundamental properties of oil/water mixture such as, classification oil/water mixture based on different criteria [23][24][25][26][27][28], desirable properties of emulsion [29][30][31], usual lab based emulsion employed for testing of membranes [32][33][34][35], concept of surfactant [25,[27][28][29] and different types of oil/water emulsion [30][31][32][33].…”

Section: Oil Propertiesmentioning

confidence: 99%

“…In this study, UV-Vis spectrometry was used to analyze the purified water. Figure 4: Fabrication of the PAN with ZIF-8 composite membrane and selective separation of oil/water mixture and emulsion adopted from [26].…”

Section: Polymermentioning

confidence: 99%

Review on Membranes for the Filtration of Aqueous Based Solution: Oil in Water Emulsion

Gebreslase¹,

Bousquet²,

Bouyer

2018

J Membr Sci Technol

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This review provides insight into the application of membrane technology in the filtration of aqueous solution generated from different industries. Due to the ever-evolving and demanding strict attention to rules and regulation for discharging of oily waste water, researchers have investigated membrane technology as a best and suitable method for separation of oil in oil-water emulsion. Membrane-based separation processes are becoming a novel material to treat oily wastewater due its facile operation process and effective in removal of oil from oil/water emulsion. This review summarizes or highlights the recent development of advanced membrane technology employed to separate oil in water emulsion using polymer and ceramic-based membranes and modified membranes via blending, coating, grafting and other techniques. Moreover, integrated membranes system to achieve high separation efficiency over single membrane process is also discussed. Perspective and conclusions concerning the future development of filtration membranes for treatment of oil in water mixture are also provided. A review of membrane technology for oil/water emulsion treatment could have a substantial contribution in developing novel membranes and modification of the existed membranes.

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Nanofibrous metal–organic framework composite membrane for selective efficient oil/water emulsion separation

Cited by 147 publications

References 33 publications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

A novel composite derived from a metal organic framework immobilized within electrospun nanofibrous polymers: An efficient methane adsorbent

Review on Membranes for the Filtration of Aqueous Based Solution: Oil in Water Emulsion

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