Design of High-Throughput Superoleophobic Copper Meshes for Oil-Water Separation

2015 ◽  
Vol 1745 ◽  
Author(s):  
HaoRan Liu ◽  
BoKang Jia ◽  
GuanQiu Li ◽  
Sumaya Nooralla ◽  
TieJun Zhang
Keyword(s):  
Environmental Sustainability ◽  
Cross Flow ◽  
Advanced Materials ◽  
Water Separation ◽  
Cross Flow Filtration ◽  
Oil Residue ◽  
Oil Water Separation ◽  
Oil Water ◽  
Flow Filtration ◽  
Underwater Superoleophobicity

ABSTRACTAdvanced materials with desired wettability are extremely important for environmental sustainability, such as oily industrial wastewater treatment and oil spill cleanup. To meet this demand, a scalable nanoengineering approach was developed to fabricate superhydrophilic and underwater superoleophobic inorganic meshes for cross-flow filtration and oil/water separation. The resulting nanostructured copper meshes exhibit superhydrophilicity and underwater superoleophobicity (oil contact angle approaching to 159°). With these meshes, very high values of filtration flux (≥900,000 Lh-1m-2) have been achieved, with ultra-low oil residue in the filtrate (<40 ppm) and long water retention time (more than 1 h). The proposed nanoengineering method paves the way for effective gravity-driven separation of immiscible oil/water mixtures, especially for low-density oil purification.

Chelation Assembly of Cellulose Nanohydrogel onto Flower-Like Structured Foam with Underwater Superoleophobicity for Highly Efficient Oil–Water Separation

NANO ◽  
2021 ◽  
pp. 2150061
Author(s):  
Yuntian Wan ◽  
Xue Lin ◽  
Zhongshuai Chang ◽  
Xiaohui Dai ◽  
Jiangdong Dai
Keyword(s):  
Water Flux ◽  
Separation Performance ◽  
Layer By Layer ◽  
Potential Candidate ◽  
Oily Wastewater ◽  
Water Separation ◽  
Composite Foam ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity

Currently, with the increasingly serious pollution problem of oily wastewater, it is urgent to develop advanced materials and methods. In this work, a Fe(III)-CMC@Ni(OH)2@Ni composite foam with superhydrophilic and underwater superoleophobicity was fabricated by an in situ growth of flower-like Ni(OH)2 nanoparticles and chelated assembly of Fe(III)-CMC nanohydrogel via a layer-by-layer self assembly using Fe[Formula: see text] ion and carboxymethyl cellulose (CMC). The composite foam could separate various oil/water mixtures and exhibited excellent efficiency over 99%. This foam possessed ultrahigh water flux (220000[Formula: see text]L m[Formula: see text] h[Formula: see text] and better resistant to penetration pressure (1.3[Formula: see text]kPa). After 30 cycles, the oil–water separation performance reduced only 0.5%, but the foam structure was still stable that guarantees a better lifetime. Besides, this composite foam showed anti-fouling, unique durability and excellent corrosion resistance performance. Taking into account all good properties, Fe(III)-CMC@Ni(OH)2@Ni composite foam was expected to be a potential candidate for responding to all kinds of complex oily wastewater conditions.

Dual-Scaled Porous Nitrocellulose Membranes with Underwater Superoleophobicity for Highly Efficient Oil/Water Separation

2013 ◽  
Vol 26 (11) ◽  
pp. 1771-1775 ◽  
Author(s):  
Xuefei Gao ◽  
Li-Ping Xu ◽  
Zhongxin Xue ◽  
Lin Feng ◽  
Jitao Peng ◽  
...  
Keyword(s):  
Water Separation ◽  
Highly Efficient ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity

Scaly bionic structures constructed on a polyester fabric with anti-fouling and anti-bacterial properties for highly efficient oil–water separation

RSC Advances ◽  
2016 ◽  
Vol 6 (90) ◽  
pp. 87332-87340 ◽  
Author(s):  
Y. W. Liu ◽  
C. H. Zhang ◽  
Z. Q. Wang ◽  
X. Fu ◽  
R. Wei
Keyword(s):  
Separation Efficiency ◽  
Polyester Fabric ◽  
Water Separation ◽  
Highly Efficient ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity

Scaly structure bionic structured on the fabric with superhydrophilicity and underwater superoleophobicity. The modified fabric showed excellent separation efficiency for various oil–water mixtures which could solve oil–water separation issue.

A robust surface with superhydrophobicity and underwater superoleophobicity for on-demand oil/water separation

Nanoscale ◽  
2021 ◽  
Author(s):  
Siyang Zhao ◽  
Yongmin Liang ◽  
Yu Yang ◽  
Jinxia Huang ◽  
Zhiguang Guo ◽  
...  
Keyword(s):  
Water Separation ◽  
On Demand ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity ◽  
Hydrophobic Areas

Superhydrophobic and underwater superoleophobic surface combines superiorities of the two opposite wettabilities. Generally, such surface is constructed by hydrophilic areas and hydrophobic areas treated by fluorine-containing modifiers. However, the surface...

UiO-66-Coated Mesh Membrane with Underwater Superoleophobicity for High-Efficiency Oil–Water Separation

2018 ◽  
Vol 10 (20) ◽  
pp. 17301-17308 ◽  
Author(s):  
Xiaojing Zhang ◽  
Yuxin Zhao ◽  
Shanjun Mu ◽  
Chunming Jiang ◽  
Mingqiu Song ◽  
...  
Keyword(s):  
High Efficiency ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity
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