The PLA/ZIF‐8 Nanocomposite Membranes: The Diameter and Surface Roughness Adjustment by ZIF‐8 Nanoparticles, High Wettability, Improved Mechanical Property, and Efficient Oil/Water Separation

Dai, Xiu; Cao, Yu; Shi, Xiaowei; Wang, Xinlong

doi:10.1002/admi.201600725

Cited by 76 publications

(40 citation statements)

References 44 publications

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“…Moreover, another group reported that different amounts of ZIF-8 MOF nanoparticles were incorporated into the poly(lactic acid) (PLA) to prepare the nanocomposite electrospun membrane. 25 The obtained PLA/ZIF-8 electrospun nanober membranes exhibited increased oil wettability and improved mechanical property than the pure PLA membrane. It should be noted that the composite membrane with imbedded MOFs is not good at accessing external chemicals because of the polymer barrier, though these MOFs are well protected by the surrounding polymers.…”

Section: -40mentioning

confidence: 91%

Layer-by-layer decoration of MOFs on electrospun nanofibers

et al. 2018

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The design and fabrication of novel organic-inorganic nanocomposite membranes using metal-organic frameworks as building blocks have attracted numerous scientists. Here, HKUST-1 particles were decorated on crosslinked polymer nanofibers through a layer-by-layer method. The immersion sequence, the crosslinking and the number of the deposition cycles have a significant impact on the formation of the HKUST-1 decorated nanofibrous membranes. Moreover, it has been shown that such a membrane could be applied as a catalyst for visual detection of hydrogen peroxide.

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Section: -40mentioning

confidence: 91%

Layer-by-layer decoration of MOFs on electrospun nanofibers

et al. 2018

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“…Dai et al [52] reported ZIF-8 in a PLA nanofiber matrix for oil/ water separation. The PLA/ZIF-8 nanofiber membranes showed increased oil wettability and significantly improved mechanical properties, as compared with pure PLA membranes.…”

Section: Water Treatmentmentioning

confidence: 99%

“…Mostly polymer nanofibers are produced by electrospinning but also metal, ceramic-based nanofibers have been obtained. [51][52][53][54][55] The highly open and interconnected nanofiber structure allows excellent access of fluids, e.g., low transport limitations for gases and liquids. These properties make nanofibers very interesting for a wide range of applications in energy storage and conversion, medical and healthcare, biotechnology to environmental engineering.…”

Section: Introductionmentioning

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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“…MOF-based mixed matrix membranes for liquid separations have been reviewed [89]. In the one study on oil/water separation that is reported, the nanoparticles of ZIF-8 have been incorporated into poly(lactic acid) or PLA to prepare an electrospun nanocomposite membrane [90]. The PLA/ZIF-8 membrane showed increased oil wettability, significantly better mechanical properties and a much higher separation efficiency than the parent PLA membrane, indicating that it could be a good candidate for oil/water separation.…”

Section: Metal-organic Framework (Mofs)/poly(lactic Acid)mentioning

confidence: 99%

A Review on Current Development of Membranes for Oil Removal from Wastewaters

Bolto

Zhang

et al. 2020

Membranes

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The current situation with the problems associated with the removal of oil from wastewaters by membranes is being explored. Many types of membranes have been investigated-organic polymers, inorganic or ceramic species and hybrids of the two. Polymeric membranes can be designed to facilitate the passage of oil, but the more successful approach is with hydrophilic types that encourage the passage of water. Ceramic membranes have an advantage here as they are less often irreversibly fouled and give a higher recovery of oil, with a lower flux decline. Furthermore, they can be cleaned up by a simple heating procedure. More attention should be given to understanding the mechanism of fouling so that operating conditions can be optimised to further reduce fouling and further decrease the flux decline, as well as assisting in the design of antifouling membranes. Another obstacle to ceramic membrane use is the high cost of manufacture. Cheaper starting materials such as clays have been surveyed.

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The PLA/ZIF‐8 Nanocomposite Membranes: The Diameter and Surface Roughness Adjustment by ZIF‐8 Nanoparticles, High Wettability, Improved Mechanical Property, and Efficient Oil/Water Separation

Cited by 76 publications

References 44 publications

Layer-by-layer decoration of MOFs on electrospun nanofibers

Layer-by-layer decoration of MOFs on electrospun nanofibers

Electrospinning of Metal–Organic Frameworks for Energy and Environmental Applications

A Review on Current Development of Membranes for Oil Removal from Wastewaters

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