Poly(dimethylsiloxane)/graphene oxide composite sponge: a robust and reusable adsorbent for efficient oil/water separation

Soft Matter ◽  
2019 ◽  
Vol 15 (45) ◽  
pp. 9224-9232 ◽  
Author(s):  
Jiajun Zhao ◽  
Hongyun Chen ◽  
Huijian Ye ◽  
Bingpan Zhang ◽  
Lixin Xu
Keyword(s):  
Graphene Oxide ◽  
Adsorption Capacity ◽  
Mechanical Stability ◽  
Polluted Water ◽  
Effective Strategy ◽  
Water Separation ◽  
Oxide Composite ◽  
Oil Water Separation ◽  
Oil Water

The development of polymer sponges with large adsorption capacity, high oil/water selectivity and mechanical stability is an effective strategy for the separation of oil from oil-polluted water.

scholarly journals A Robust PVDF-Assisted Composite Membrane for Tetracycline Degradation in Emulsion and Oil-Water Separation

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3201
Author(s):  
Huijun Li ◽  
Xin Xu ◽  
Jiwei Wang ◽  
Xuefeng Han ◽  
Zhouqing Xu
Keyword(s):  
Graphene Oxide ◽  
Glass Fiber ◽  
Polyvinylidene Fluoride ◽  
Large Scale ◽  
Environmental Crisis ◽  
Polluted Water ◽  
Separation Performance ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Tetracycline (TC) contamination in water has progressively exacerbated the environmental crisis. It is urgent to develop a feasible method to solve this pollution in water. However, polluted water often contains oil. This paper reported a glass fiber (FG)-assisted polyvinylidene fluoride (PVDF) hybrid membrane with dual functions: high TC degradation efficiency in emulsion and oil-water separation. It can meet the catalytic degradation of tetracycline in complex water. This membrane was decorated by coating the glass fiber with PVDF solution containing hydrophilic graphene oxide hybridized NH2-MIL-101(Fe) particles. Moreover, due to its strong mechanical strength enhanced by the glass fiber, it can be reused as TC degradation catalysts for dozens of times without cracking. Thanks to the hydrophobicity of PVDF and the surface pore size of MOFs, the prepared membrane showed a good oil-water separation performance. Besides, the hydrophilic graphene oxide (GO) and NH2-MIL-101(Fe) improved the membrane’s anti-fouling performance, allowing it to be reused as the separation membrane. Therefore, the outstanding stability and recoverability of the membrane make it as a fantastic candidate material for large-scale removal of TC as well as oil-water separation application.

scholarly journals Synthesis and Characterization of Highly Efficient Oil-Water Separation, Recyclable, Magnetic Particles CoFe2O4/SDB

2021 ◽  
Author(s):  
Cailin Liu ◽  
Li Yu ◽  
Yue Fan ◽  
Chang Li ◽  
Xianyan Ren ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Magnetic Particles ◽  
In Situ Polymerization ◽  
Solid Phase ◽  
Sol Gel ◽  
Water Separation ◽  
Practical Applications ◽  
Oil Water Separation ◽  
Oil Water

Abstract In the oil-water separation, the difficulty to recover and low hydrophobicity are key limitation factors for practical applications. In this paper, we design Cobalt ferrite hybird Polystyrene divinylbenzene microspheres (CoFe2O4/SDB), which were conducted through in-situ suspension copolymerization. The CoFe2O4 is prepared by low heat solid phase sol-gel method. It had been found that the CoFe2O4/SDB have a spherical structure, good adsorption behavior, highly hydrophobicity and even superhydrophobicity. The adsorption capacity of CoFe2O4/SDB composites could absorb kerosene up to 6 times of its own weight. Interestingly, kerosene can be easily separated from the surface of CoFe2O4/SDB particles with ultrasonic operation. CoFe2O4/SDB particles can still maintain good hydrophobicity and adsorption capacity of kerosene after 11 cycles after drying. With in situ polymerization of St、DVB and CoFe2O4, CoFe2O4/SDB as a promising absorbent of kerosene which has great potential in application of oil-water separation.

Synthesis of graphene oxide–SiO2 coated mesh film and its properties on oil–water separation and antibacterial activity

2015 ◽  
Vol 73 (5) ◽  
pp. 1098-1103 ◽  
Author(s):  
Jun Liu ◽  
Wanxia He ◽  
Peng Li ◽  
Siying Xia ◽  
Xiaomeng Lü ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Environmental Stability ◽  
Layer By Layer ◽  
Oily Wastewater ◽  
Separation System ◽  
Water Separation ◽  
Silica Coatings ◽  
Oil Water Separation ◽  
Oil Water ◽  
Harsh Conditions

Oil–water separation has recently become a worldwide challenge due to the frequent occurrence of oil spill accidents and increasing industrial oily wastewater. In this work, the multifunctional mesh films with underwater oleophobicity and certain bacteriostatic effects are prepared by layer-by-layer assembly of graphene oxide-silica coatings on stainless steel mesh. The mesh film exhibits excellent environmental stability under a series of harsh conditions. The new, facile and reusable separation system is proposed to achieve deep treatment of oily wastewater, and the oil collection rate can reach over 99%.

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