scholarly journals Superhydrophobic/superoleophilic cotton-oil absorbent: preparation and its application in oil/water separation

RSC Advances ◽  
2018 ◽  
Vol 8 (53) ◽  
pp. 30257-30264 ◽  
Author(s):  
Na Lv ◽  
Xiaoli Wang ◽  
Shitao Peng ◽  
Lei Luo ◽  
Ran Zhou
Keyword(s):  
Cotton Fiber ◽  
Sol Gel ◽  
Fiber Surface ◽  
Water Separation ◽  
Gel Method ◽  
Oil Sorbent ◽  
Oil Water Separation ◽  
Oil Absorbent ◽  
Oil Water ◽  
Cotton Oil

A superhydrophobic and superoleophilic oil sorbent was prepared by attaching SiO2 particles onto a cotton fiber surface by a sol–gel method and subsequent octadecyltrichlorosilane modification.

A self-cleaning TiO2 coated mesh with robust underwater superoleophobicity for oil/water separation in a complex environment

RSC Advances ◽  
2016 ◽  
Vol 6 (69) ◽  
pp. 65171-65178 ◽  
Author(s):  
Zhe-Qin Dong ◽  
Bao-Juan Wang ◽  
Min Liu ◽  
Xiao-hua Ma ◽  
Zhen-Liang Xu
Keyword(s):  
Separation Efficiency ◽  
Sol Gel ◽  
Complex Environment ◽  
Water Separation ◽  
Gel Method ◽  
Oil Water Separation ◽  
Oil Water ◽  
Self Cleaning ◽  
Underwater Superoleophobicity ◽  
High Separation

A TiO2 coated mesh with self-cleaning property, robust underwater superoleophobicity and high separation efficiency was fabricated by sol–gel method.

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.

Lightweight, Flexible and Hydrophobic Cotton Fiber/Silica Aerogel Composite by Freeze-Drying for Organic Solvent/Water Separation and Thermal Insulation

2021 ◽  
Vol 13 (9) ◽  
pp. 1820-1824
Author(s):  
Jian-Chun Huo ◽  
Hai-Xia Yang ◽  
Yuan Ma ◽  
Jie Bai
Keyword(s):  
Thermal Insulation ◽  
Cotton Fiber ◽  
Silica Aerogel ◽  
Low Cost ◽  
Sol Gel ◽  
Water Separation ◽  
Organic Reagents ◽  
Strong Adsorption ◽  
Aerogel Composite ◽  
Oil Water Separation

Natural cotton fiber used for reinforcement is low-cost, environmentally friendly, good flexibility and easy to obtain. In this study, a new cotton fiber/silica aerogel composite was developed by sol–gel method via freezedrying. The obtained composite has excellent flexibility and can be restored to its original state after bending for 180° without obvious cracks. After 20 cycles continuous compression, the total unrecoverable strain loss is only 20% under strain of 60%. The composite also shows very prominent hydrophobicity, and the contact angle with water reaches 145 degrees. It has strong adsorption capacity for organic reagents and oil, with adsorption ratios of 500% and 600%, respectively. In addition, the composite has a low thermal conductivity of 0.038 W/(m·K) at room temperature. The obtained composite exhibits considerable promise in oil-water separation and thermal insulation.

Design and fabrication of polydopamine based superhydrophobic fabrics for efficient oil-water separation

Soft Matter ◽  
2021 ◽  
Author(s):  
Jixi Zhang ◽  
Ligui Zhang ◽  
Xiao Gong
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Sol Gel ◽  
High Water ◽  
Water Contact ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Fabric Surface

In this work, we prepare a PDMS-SiO2-PDA@fabric with high water contact angle (WCA=155o). Combining dopamine self-polymerization and sol-gel method, SiO2 is in situ grown on a PDA-modified fabric surface to...

Sol–gel fabrication of a non-laminated graphene oxide membrane for oil/water separation

2015 ◽  
Vol 3 (38) ◽  
pp. 19517-19524 ◽  
Author(s):  
Tiefan Huang ◽  
Lin Zhang ◽  
Huanlin Chen ◽  
Congjie Gao
Keyword(s):  
Graphene Oxide ◽  
Sol Gel ◽  
Water Separation ◽  
Sol Gel Process ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oxide Membrane

A non-laminated graphene oxide membrane with superhydrophilic and underwater superoleophobic properties was fabricated by a sol–gel process for effective oil/water separation.

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