Superhydrophobic magnetic core–shell mesoporous organosilica nanoparticles with dendritic architecture for oil–water separation

2020 ◽  
Vol 4 (7) ◽  
pp. 2184-2191 ◽  
Author(s):  
Baixian Wang ◽  
Yingzhen Wei ◽  
Qifei Wang ◽  
Jiancheng Di ◽  
Shiding Miao ◽  
...  
Keyword(s):  
Magnetic Core ◽  
Core Shell ◽  
Water Separation ◽  
Magnetic Cores ◽  
Mesoporous Organosilica ◽  
Oil In Water ◽  
Oil Water Separation ◽  
Oil Water

Superhydrophobic dendritic mesoporous organosilica nanoparticles with magnetic cores were fabricated, realizing the efficient adsorption of oils from oil-in-water emulsions.

Amphiphilic hyperbranched polyethyleneimine for highly efficient oil–water separation

2020 ◽  
Vol 8 (5) ◽  
pp. 2412-2423 ◽  
Author(s):  
Shu Yan ◽  
Guijin He ◽  
Dengfeng Ye ◽  
Yongsheng Guo ◽  
Wenjun Fang
Keyword(s):  
Phase Separation ◽  
Soft Matter ◽  
Polymer Layer ◽  
Core Shell ◽  
Water Separation ◽  
Highly Efficient ◽  
Oil Water Separation ◽  
Oil Water

Core–shell structural amphiphilic soft matter, HPEI-g-Cn, can achieve phase separation thoroughly, in which an interfacial active-polymer layer is formed after demulsification.

scholarly journals Efficient Oil/Water Separation Membrane Derived from Super-Flexible and Superhydrophilic Core–Shell Organic/Inorganic Nanofibrous Architectures

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 974 ◽  
Author(s):  
Zhi Liu ◽  
Detao Qin ◽  
Jianghui Zhao ◽  
Quan Feng ◽  
Zhengtao Li ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Scale Up ◽  
Core Shell ◽  
Water Separation ◽  
Membrane Performance ◽  
Novel Approach ◽  
Separation Membrane ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanofibrous Membranes

To address the worldwide oil and water separation issue, a novel approach was inspired by natural phenomena to synthesize superhydrophilic and underwater superoleophobic organic/inorganic nanofibrous membranes via a scale up fabrication approach. The synthesized membranes possess a delicate organic core of PVDF-HFP and an inorganic shell of a CuO nanosheet structure, which endows super-flexible properties owing to the merits of PVDF-HFP backbones, and superhydrophilic functions contributed by the extremely rough surface of a CuO nanosheet anchored on flexible PVDF-HFP. Such an organic core and inorganic shell architecture not only functionalizes membrane performance in terms of antifouling, high flux, and low energy consumption, but also extends the lifespan by enhancing its mechanical strength and alkaline resistance to broaden its applicability. The resultant membrane exhibits good oil/water separation efficiency higher than 99.7%, as well as excellent anti-fouling properties for various oil/water mixtures. Considering the intrinsic structural innovation and its integrated advantages, this core–shell nanofibrous membrane is believed to be promising for oil/water separation, and this facile approach is also easy for scaled up manufacturing of functional organic/inorganic nanofibrous membranes with insightful benefits for industrial wastewater treatment, sensors, energy production, and many other related areas.

Hierarchical rough surfaces formed by LBL self-assembly for oil–water separation

2014 ◽  
Vol 2 (30) ◽  
pp. 11830-11838 ◽  
Author(s):  
Xiaoyu Li ◽  
Dan Hu ◽  
Kun Huang ◽  
Chuanfang Yang
Keyword(s):  
Stainless Steel ◽  
Removal Efficiency ◽  
Self Assembly ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

Stainless steel felt modified with hierarchically structured coatings and hydrophobicity can achieve a removal efficiency of greater than 99% for oil-in-water emulsion separation.

An oil/water separation nanofibrous membrane with a 3-D structure from the blending of PES and SPEEK

2019 ◽  
Vol 31 (5) ◽  
pp. 538-547 ◽  
Author(s):  
Qiong Du ◽  
Zheng Chen ◽  
Xiangyu Jiang ◽  
Jinhui Pang ◽  
Zhenhua Jiang ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Separation Process ◽  
Nanofibrous Membrane ◽  
Water Separation ◽  
Water Emulsion ◽  
High Mechanical Strength ◽  
Good Thermal Stability ◽  
Oil In Water ◽  
Oil Water Separation ◽  
Oil Water

A new nanofibrous membrane (NFM) was prepared by blending polyethersulfone (PES) and sulfonated poly(ether ether ketone) (SPEEK) via electrospinning. The membrane exhibits good thermal stability and high mechanical strength. The hydrophilicity of the membrane could be controlled by adjusting the mass ratio of PES to SPEEK. PES acts as the backbone fiber and provides high mechanical strength, while SPEEK provides hydrophilic functional groups due to the strong hydrophilicity of the sulfonic group. The test results show that the composite NFM integrates the advantages of the two polymers. Simple adjustment of the weight ratios of the two polymers can enable an adjustable flux so that the membrane can be used for different kinds of oil/water separation. The results show that NFMs can not only separate immiscible oil/water systems but also separate oil-in-water emulsions. The immiscible oil/water separation process was driven only by gravity and had a high flux of 1119.63 Lm−2 h−1. This separation process conserves energy, which is beneficial for environmental protection. The separation flux of the oil-in-water emulsion was 758.71 Lm−2 h−1 bar−1 based on measurements under different pressures, and the separation purity total organic carbon was below 50 ppm. This work indicates that a membrane comprised of PES and SPEEK has excellent performance and can be used in different fields.

scholarly journals Polyimide/cellulose acetate core/shell electrospun fibrous membranes for oil-water separation

2017 ◽  
Vol 177 ◽  
pp. 71-85 ◽  
Author(s):  
Wenjing Ma ◽  
Zhongfu Guo ◽  
Juntao Zhao ◽  
Qian Yu ◽  
Fang Wang ◽  
...  
Keyword(s):  
Cellulose Acetate ◽  
Core Shell ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Fibrous Membranes

Underwater superoleophobic carbon nanotubes/core–shell polystyrene@Au nanoparticles composite membrane for flow-through catalytic decomposition and oil/water separation

2016 ◽  
Vol 4 (28) ◽  
pp. 10810-10815 ◽  
Author(s):  
Lei Zhang ◽  
Jincui Gu ◽  
Liping Song ◽  
Lu Chen ◽  
Youju Huang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Composite Membrane ◽  
Au Nanoparticles ◽  
Catalytic Decomposition ◽  
Core Shell ◽  
Water Separation ◽  
Oil Water Separation ◽  
Flow Through ◽  
Oil Water

A hierarchical composite membrane with underwater superoleophobic surface and underlying catalytic microspheres is fabricated to achieve simultaneous flow-through catalytic decomposition and oil/water separation.

A core–shell fiber-constructed pH-responsive nanofibrous hydrogel membrane for efficient oil/water separation

2017 ◽  
Vol 5 (36) ◽  
pp. 19398-19405 ◽  
Author(s):  
Linlin Zang ◽  
Jun Ma ◽  
Dongwei Lv ◽  
Qingliang Liu ◽  
Wenling Jiao ◽  
...  
Keyword(s):  
Core Shell ◽  
Ph Responsive ◽  
Water Separation ◽  
Hydrogel Membrane ◽  
Oil Water Separation ◽  
Gravity Driven ◽  
Oil Water

A core–shell fiber-constructed pH-responsive nanofibrous hydrogel membrane was fabricated for gravity-driven oil/water separation in acid, neutral, and alkali environments.

scholarly journals Mussel-Inspired Fabrication of PDA@PAN Electrospun Nanofibrous Membrane for Oil-in-Water Emulsion Separation

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3434
Author(s):  
Haodong Zhao ◽  
Yali He ◽  
Zhihua Wang ◽  
Yanbao Zhao ◽  
Lei Sun
Keyword(s):  
Separation Efficiency ◽  
Low Cost ◽  
Nanofibrous Membrane ◽  
Water Separation ◽  
Water Emulsion ◽  
Oil In Water ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil In Water Emulsion

Emulsified oily wastewater threatens human health seriously, and traditional technologies are unable to separate emulsion containing small sized oil droplets. Currently, oil–water emulsions are usually separated by special wettability membranes, and researchers are devoted to developing membranes with excellent antifouling performance and high permeability. Herein, a novel, simple and low-cost method has been proposed for the separation of emulsion containing surfactants. Polyacrylonitrile (PAN) nanofibers were prepared via electrospinning and then coated by polydopamine (PDA) by using self-polymerization reactions in aqueous solutions. The morphology, structure and oil-in-water emulsion separation properties of the as-prepared PDA@PAN nanofibrous membrane were tested. The results show that PDA@PAN nanofibrous membrane has superhydrophilicity and almost no adhesion to crude oil in water, which exhibits excellent oil–water separation ability. The permeability and separation efficiency of n-hexane/water emulsion are up to 1570 Lm−2 h−1 bar−1 and 96.1%, respectively. Furthermore, after 10 cycles of separation, the permeability and separation efficiency values do not decrease significantly, indicating its good recycling performance. This research develops a new method for preparing oil–water separation membrane, which can be used for efficient oil-in-water emulsion separation.

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