Superhydrophilicity and underwater superoleophobicity graphene oxide-microcrystalline cellulose complex-based mesh applied for efficient oil/water separation

2018 ◽  
Vol 111 ◽  
pp. 155-164
Author(s):  
Tao Yan ◽  
Huiwen Meng ◽  
Wenjihao Hu ◽  
Feipeng Jiao
Keyword(s):  
Graphene Oxide ◽  
Microcrystalline Cellulose ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Underwater Superoleophobicity

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

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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