scholarly journals A flexible Ti3C2Tx (MXene)/paper membrane for efficient oil/water separation

RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16296-16304 ◽  
Author(s):  
Jayaprakash Saththasivam ◽  
Kui Wang ◽  
Wubulikasimu Yiming ◽  
Zhaoyang Liu ◽  
Khaled A. Mahmoud
Keyword(s):  
Separation Efficiency ◽  
Coated Paper ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
High Separation

A highly hydrophilic and oleophobic membrane based on Ti3C2Tx (MXene) coated paper demonstrated high separation efficiency for oil/water emulsions with excellent antifouling properties.

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 Thiol–ene click reaction on cellulose sponge and its application for oil/water separation

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20147-20151 ◽  
Author(s):  
Zhenzhen Wu ◽  
Yingzhan Li ◽  
Linping Zhang ◽  
Yi Zhong ◽  
Hong Xu ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Click Reaction ◽  
Water Mixture ◽  
Water Separation ◽  
Cellulose Sponge ◽  
Emulsion Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
High Separation

Thiol–ene click reaction was employed to synthesize a flexible hydrophilic cellulose sponge. The sponge can be circular used in oil/water mixture (emulsion) separation and hold separation efficiency high separation efficiency.

scholarly journals Dodecyl Mercaptan Functionalized Copper Mesh for Water Repellence and Oil-water Separation

2021 ◽  
Vol 18 (4) ◽  
pp. 887-899
Author(s):  
Yanling Tian ◽  
Jiekai Feng ◽  
Zexin Cai ◽  
Jiaqi Chao ◽  
Dawei Zhang ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Synthesis Process ◽  
Water Separation ◽  
Oil Water Separation ◽  
One Step ◽  
Oil Water ◽  
Water Repellence ◽  
Copper Mesh ◽  
Dodecyl Mercaptan

AbstractReckless discharge of industrial wastewater and domestic sewage as well as frequent leakage of crude oil have caused serious environmental problems and posed severe threat to human survival. Various nature inspired superhy-drophobic surfaces have been successfully applied in oily water remediation. However, further improvements are still urgently needed for practical application in terms of facile synthesis process and long-term durability towards harsh environment. Herein, we propose a simple one-step dodecyl mercaptan functionalization method to fabricate Super-hydrophobic-Superoleophilic Copper Mesh (SSCM). The prepared SSCM possesses excellent water repellence and oil affinity, enabling it to successfully separate various oil-water mixtures with high separation efficiency (e.g., > 99% for hexadecane-water mixture). The SSCM retains high separating ability when hot water and strong corrosive aqueous solutions are used to simulate oil-water mixtures, indicating remarkable chemical durability of the dodecyl mercaptan functionalized copper mesh. Additionally, the efficiency can be well maintained during 50 cycles of separation, and the water repellence is even stable after storage in air for 120 days, demonstrating the reusability and long-term stability of the SSCM. Furthermore, the functionalized mesh also shows good mechanical robustness towards abrasion by sandpaper, and oil-water separation efficiency of > 96% can be obtained after 10 cycles of abrasion. The reported one-step dodecyl mercaptan functionalization could be a simple method for increasing the water repellence of copper mesh, and thereby be a great candidate for treating large-scale oily wastewater in harsh environments.

scholarly journals A Facile Route to Fabricate Superhydrophobic Cu2O Surface for Efficient Oil–Water Separation

Coatings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 659 ◽  
Author(s):  
Sheng Lei ◽  
Xinzuo Fang ◽  
Fajun Wang ◽  
Mingshan Xue ◽  
Junfei Ou ◽  
...  
Keyword(s):  
Low Cost ◽  
Environmental Safety ◽  
Water Separation ◽  
Short Reaction Time ◽  
Oil Water Separation ◽  
Oil Water ◽  
High Separation ◽  
Application Prospects ◽  
Copper Mesh ◽  
Facile Route

The mixture of insoluble organics and water seriously affects human health and environmental safety. Therefore, it is important to develop an efficient material to remove oil from water. In this work, we report a superhydrophobic Cu2O mesh that can effectively separate oil and water. The superhydrophobic Cu2O surface was fabricated by a facile chemical reaction between copper mesh and hydrogen peroxide solution without any low surface reagents treatment. With the advantages of simple operation, short reaction time, and low cost, the as-synthesized superhydrophobic Cu2O mesh has excellent oil–water selectivity for many insoluble organic solvents. In addition, it could be reused for oil–water separation with a high separation ability of above 95%, which demonstrated excellent durability and reusability. We expect that this fabrication technique will have great application prospects in the application of oil–water separation.

scholarly journals Fabricated of Superhydrophobic Silanized Melamine Sponge with Photochromic Properties for Efficiency Oil/Water Separation

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Peng Hong ◽  
Zhu Liu ◽  
Yang Gao ◽  
Yubin Chen ◽  
Mingxun Zhuang ◽  
...  
Keyword(s):  
Large Scale ◽  
Separation Efficiency ◽  
Low Cost ◽  
Water Repellency ◽  
Dip Coating ◽  
Absorption Capacity ◽  
Photochromic Properties ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Superhydrophobic sponge as potential absorbing material for oil/water separation is attracting great attention recently. However, there are still some challenges to feasibly fabricate superhydrophobic sponge with large scale and low cost. Herein, a novel photochromic superhydrophobic melamine sponge (PDMS-SP sponge) is fabricated by facilely dip-coating and thermocuring of hydroxyl-terminated polydimethylsiloxanes mixed with photochromic spiropyran. FT-IR, EDS, and XPS results confirm the successful coating of PDMS-SP upon melamine sponge. The resultant sponge not only possesses excellent water repellency with a contact angle of 154.5° and oil-water separation efficiency with an oil absorption capacity of 48–116 folds of itself weight, but also shows photochromic phenomenon between colorless and purple when it is successively exposed to UV irradiation and visible light.

scholarly journals PP/TiO2 Melt-Blown Membranes for Oil/Water Separation and Photocatalysis: Manufacturing Techniques and Property Evaluations

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 775 ◽  
Author(s):  
Fei Sun ◽  
Ting-Ting Li ◽  
Haitao Ren ◽  
Qian Jiang ◽  
Hao-Kai Peng ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Decomposition Temperature ◽  
Particle Dispersion ◽  
Tio2 Content ◽  
Scanning Calorimetry ◽  
Water Separation ◽  
Photocatalytic Effect ◽  
Oil Water Separation ◽  
Oil Water ◽  
Manufacturing Techniques

This study aims to produce polypropylene (PP)/titanium dioxide (TiO2) melt-blown membranes for oil/water separation and photocatalysis. PP and different contents of TiO2 are melt-blended to prepare master batches using a single screw extruder. The master batches are then fabricated into PP/TiO2 melt-blown membranes. The thermal properties of the master batches are analyzed using differential scanning calorimetry and thermogravimetric analysis, and their particle dispersion and melt-blown membrane morphology are evaluated by scanning electron microscopy. TiO2 loaded on melt-blown membranes is confirmed by X-ray diffraction (XRD). The oil/water separation ability of the melt-blown membranes is evaluated to examine the influence of TiO2 content. Results show that the thermal stability and photocatalytic effect of the membranes increase with TiO2 content. TiO2 shows a good dispersion in the PP membranes. After 3 wt.% TiO2 addition, crystallinity increases by 6.4%, thermal decomposition temperature increases by 25 °C compared with pure PP membranes. The resultant PP/TiO2 melt-blown membrane has a good morphology, and better hydrophobicity even in acetone solution or 6 h ultraviolet irradiation, and a high oil flux of about 15,000 L·m−2·h−1. Moreover, the membranes have stabilized oil/water separation efficiency after being repeatedly used. The proposed melt-blown membranes are suitable for mass production for separating oil from water in massively industrial dyeing wastewater.

scholarly journals Facile Fabrication of Magnetic, Durable and Superhydrophobic Cotton for Efficient Oil/Water Separation

Polymers ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 442 ◽  
Author(s):  
Mingguang Yu ◽  
Qing Wang ◽  
Wenxin Yang ◽  
Yonghang Xu ◽  
Min Zhang ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Water Repellency ◽  
Cotton Fabrics ◽  
Ammonia Solution ◽  
Hot Water ◽  
Water Contact ◽  
Water Separation ◽  
Efficient Strategy ◽  
Oil Water Separation ◽  
Oil Water

In this paper, we present a facile and efficient strategy for the fabrication of magnetic, durable, and superhydrophobic cotton for oil/water separation. The superhydrophobic cotton functionalized with Fe3O4 magnetic nanoparticles was prepared via the in situ coprecipitation of Fe2+/Fe3+ ions under ammonia solution on cotton fabrics using polyvinylpyrrolidone (PVP) as a coupling agent and hydrophobic treatment with tridecafluorooctyl triethoxysilane (FAS) in sequence. The as-prepared cotton demonstrated excellent superhydrophobicity with a water contact angle of 155.6° ± 1.2° and good magnetic responsiveness. Under the control of the external magnetic field, the cotton fabrics could be easily controlled to absorb the oil from water as oil absorbents, showing high oil/water separation efficiency, even in hot water. Moreover, the cotton demonstrated remarkable mechanical durable properties, being strongly friction-resistant against sandpaper and finger wipe, while maintaining its water repellency. This study developed a novel and efficient strategy for the construction of magnetic, durable, and superhydrophobic biomass-based adsorbent for oil/water separation, which can be easily scaled up for practical oil absorption.

scholarly journals An underwater superoleophobic nanofibrous cellulosic membrane for oil/water separation with high separation flux and high chemical stability

Nanoscale ◽  
2018 ◽  
Vol 10 (6) ◽  
pp. 3037-3045 ◽  
Author(s):  
Seong Kyung Hong ◽  
Seonghan Bae ◽  
Hyungkook Jeon ◽  
Minseo Kim ◽  
Seong J. Cho ◽  
...  
Keyword(s):  
Chemical Stability ◽  
Harsh Environments ◽  
High Chemical ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Cellulosic Membrane ◽  
High Separation ◽  
High Chemical Stability

A nanofibrous cellulosic membrane effectively separates large amounts of oil/water mixtures in chemically harsh environments at high fluxes.

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.

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