Superwetting surfaces for filtration separation of high-viscosity raw petroleum/water mixtures

Jiang, Xian; Yang, Fuchao; Guo, Zhiguang

doi:10.1039/d2ta03444a

Cited by 43 publications

(30 citation statements)

References 126 publications

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“…However, current tissue repair materials often do not possess such properties, but often only provide early spatial occupancy and are usually not biologically permeable to the bone defect area. Most studies of supperwetting bioimplant materials focus on the infiltration characteristics of the base material ( Jiang et al, 2022 ). As a natural extracellular-derived proteinaceous material, gelatin has been widely studied and applied in various biomedical fields, due to its implantability, biocompatibility and degradable properties ( Stevens et al, 2002 ).…”

Section: Introductionmentioning

confidence: 99%

Superwettable and injectable GelMA-MSC microspheres promote cartilage repair in temporomandibular joints

Yang

Huang²,

Zheng³

et al. 2022

Front. Bioeng. Biotechnol.

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Temporomandibular disorders (TMD) can be treated by promoting cartilage regeneration with biomaterials. However, there are deficiencies in the infiltration function of bone filler biological materials. In this study, stems cells were loaded onto gelatin methacryloyl (GelMA) hydrogel microspheres endowed with superwettable properties and TGF-β sustained-release function, which can quickly infiltrate the irregular surface of the temporomandibular joint (TMJ) bone defect area and accelerate cartilage healing. First, to improve cell adhesion and spreading function, the BMSCs-coated GelMA microspheres were endowed with superwetting property. At the same time, the swelling adsorption characteristics of gelatin microspheres could be used to load recombinant TGF-β within the microspheres, which could in turn promote the chondrogenic differentiation of multi-potent bone marrow mesenchymal stem cells. The SEM imaging demonstrated that BMSCs-coated GelMA microsphere has superwettable and superhydrophilic property, which enabled rapid adaptation to the bone defect surface morphology, which is conducive to tissue repair. Furthermore, the cartilage defect model showed that rBMSCs-coated GelMA microspheres promote temporomandibular joint arthritis repair. In conclusion, our study established that BMSC-coated GelMA microspheres endowed with superwetting properties, can colonize the bone defect repair site better with sustained release of growth factors, thus providing an innovative strategy for promoting cartilage regeneration.

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Section: Introductionmentioning

confidence: 99%

Superwettable and injectable GelMA-MSC microspheres promote cartilage repair in temporomandibular joints

Yang

Huang²,

Zheng³

et al. 2022

Front. Bioeng. Biotechnol.

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“…During the past two decades, special wettability materials with superhydrophobic surfaces have been proposed as an advanced functional material for the separation of emulsified and stratified oil/water mixtures. − Superhydrophobic surfaces are characterized by their high water contact angle (WCA > 150°) and low roll-off water sliding angle (WSA < 10°). In general, the construction of superhydrophobic surfaces can be achieved by simultaneous modification of the surface chemistry/chemical composition and the topography/surface microstructure .…”

Section: Introductionmentioning

confidence: 99%

Facile and Green Fabrication of Superhydrophobic Polyacrylonitrile Nonwoven Fabric with Iron Hydroxide Nanoparticles for Efficient Oil/Water Separation

Abu-Thabit

Azad

Mezghani

et al. 2022

ACS Appl. Polym. Mater.

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Superhydrophobic materials have been used for the treatment of oily wastewater due to their selective absorption properties. However, many of the reported methods for creating superhydrophobic surfaces lack the feasibility for large-scale production due to the use of non-environmentally friendly chemicals or the involvement of complicated fabrication steps. In this study, we report a simple, green, and rapid process for fabricating superhydrophobic polyacrylonitrile (PAN) nonwoven fabric (NWF) for the separation of oil/water mixtures via adsorption and filtration strategies. PAN NWF was functionalized with iron hydroxide nanoparticles, which endowed the modified fabric with increased surface roughness and hydrophobic property. In the next step, the superhydrophobicity was attained by creating a multiscale hierarchical surface roughness and lowering the surface energy via an in situ deposition of the iron palmitate complex nano/ microparticles. The resulting superhydrophobic PAN NWF exhibited high chemical stability in corrosive environments and excellent mechanical durability as revealed from the sandpaper abrasion and tape peeling tests. The superhydrophobic NWF showed good oil absorption capacity, high permeation flux, high separation efficiency, and stable performance for 20 separation cycles. The excellent durability, recyclability, and long-term separation performance are expected to enable the application of the modified fabric for water−oil separation in harsh environments.

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“…The performance of a membrane is generally affected by its fouling tendency, which blocks the pores of membranes and leads to lower flux and efficiency. In recent years, porous polymeric membranes have become a potential material for oil–water separation as they offer selective wettability. , Membranes with superhydrophilicity and underwater oleophobicity have extensively been studied for high permeation fluxes with low degree of fouling. − A great effort has been put by scientists in constructing rationally engineered anti-fouling superwettable surfaces for achieving efficient oil–water separation. − The superwettability, modulated pore size, and surface roughness are key features to design superhydrophilic underwater oleophobic membranes for excellent purification of wastewater containing oil–water emulsions. − …”

Section: Introductionmentioning

confidence: 99%

Pickering Emulsion-Templated Nanocomposite Membranes for Excellent Demulsification and Oil–Water Separation

Gurave

Dubey

Nandan

et al. 2022

ACS Appl. Mater. Interfaces

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A worldwide steady increase in oily wastewater, due to oil spillage and various industrial discharges, requires immediate efforts toward development of an effective strategy and materials to preserve the natural water bodies. Designing a superwettable fibrous membrane of robust structure and anti-fouling property for efficient separation of oil-water mixtures and emulsions is therefore highly demanding. The electrospun fibrous membrane, which possesses porosity and flexibility and properties including superwettability and tunable functionality, can be considered as apposite materials for this cause. In this approach, we combined two strategies, viz., Pickering emulsion and near gel resin (nGR) emulsion electrospinning together to produce a fibrous nanocomposite membrane for efficient oil−water separation and demulsification. nGR Pickering emulsions were stabilized using hydrophilic SiO 2 nanoparticles and successfully optimized for fabricating the crosslinked core sheath-structured fibrous membrane. The prepared membrane provided twofold functionality due to the core sheath structure of the fibers. The crosslinked polystyrene core offered high oil adsorption capacity, whereas SiO 2 -functionalized crosslinked polyvinyl alcohol sheath provided a rough, superhydrophilic surface with underwater oleophobic behavior to the membrane. The optimized SiO 2 -Pickering emulsion-templated nanocomposite membrane demonstrated excellent underwater anti-oil adhesion behavior (UWOCA ∼148°) with efficient oil−water separation capacity of more than 99% and separation flux up to 3346 ± 91 L m −2 h −1 . The membrane was evaluated against various oil−water emulsions and found to have a superior separation efficiency. Moreover, excellent anti-oil adhesion property provided the intact membrane, where consistent separation performance was achieved up to 10 separation cycles without any loss. The membrane was used for separation of hot oil−water emulsions and showed no structural disintegration or loss in separation performance when exposed to elevated temperatures. The developed nanocomposite membranes could efficiently be used for separation and demulsification, and their applications can be explored in various other fields including selective sorption, catalysis, and storage in future.

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Superwetting surfaces for filtration separation of high-viscosity raw petroleum/water mixtures

Abstract: The petroleum industry produces a large amount of crude oil-contaminated water during the production process. Removing oil and grease components from crude oil/water mixtures is an urgent problem and a...

Cited by 43 publications

References 126 publications

Superwettable and injectable GelMA-MSC microspheres promote cartilage repair in temporomandibular joints

Superwettable and injectable GelMA-MSC microspheres promote cartilage repair in temporomandibular joints

Facile and Green Fabrication of Superhydrophobic Polyacrylonitrile Nonwoven Fabric with Iron Hydroxide Nanoparticles for Efficient Oil/Water Separation

Pickering Emulsion-Templated Nanocomposite Membranes for Excellent Demulsification and Oil–Water Separation

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