scholarly journals Superhydrophobic paper with mussel-inspired polydimethylsiloxane–silica nanoparticle coatings for effective oil/water separation

RSC Advances ◽  
2020 ◽  
Vol 10 (14) ◽  
pp. 8008-8015 ◽  
Author(s):  
Xuewei Ruan ◽  
Tiancheng Xu ◽  
Dingjiang Chen ◽  
Ziwen Ruan ◽  
Haitu Hu
Keyword(s):  
Low Cost ◽  
Silica Nanoparticle ◽  
Water Separation ◽  
Wetting Properties ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanoparticle Coatings ◽  
Superhydrophobic Paper

Although various filtration materials with (super)wetting properties have been fabricated for effective oil/water separation, eco-friendly and low-cost materials are still highly desired.

scholarly journals Preparation of Fluorine-Free Superhydrophobic Paper with Dual-Response of Temperature and pH

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1167
Author(s):  
Bin Du ◽  
Daodao Xue ◽  
Rubai Luo ◽  
Huailin Li ◽  
Kenan Yang ◽  
...  
Keyword(s):  
Low Cost ◽  
Dip Coating ◽  
Surface Element ◽  
Water Separation ◽  
Copolymer Solution ◽  
Dual Responsive ◽  
Oil Water Separation ◽  
Oil Water ◽  
Superhydrophobic Paper ◽  
Single Response

Although various superhydrophobic materials have been manufactured and effectively used for oil–water separation, it is still highly desirable to explore materials which are eco-friendly, low-cost, and multifunctional. In this paper, a stable copolymer solution was prepared from the fluorine-free superhydrophobic copolymer with dual-responsiveness of temperature and pH. The functional superhydrophobic paper was prepared by immersing paper in copolymer solution by the dip-coating method. The surface element and structure analysis of the prepared superhydrophobic paper shows that the dual-responsive copolymer adheres successfully to the surface of the paper without destroying the fiber structure of the paper. At pH ≥ 7 and T > 25 °C, the paper has a good superhydrophobic performance, while under the conditions of pH < 7 and T < 25 °C, the paper comes into a hydrophilic state. Therefore, the dual-responsive superhydrophobic paper is more likely to adapt to the complicated oil-water separation environment than the single-response.

Fabrication of hydrophobic NiFe2O4@poly(DVB-LMA) sponge via Pickering emulsion template method for oil/water separation

Soft Matter ◽  
2021 ◽  
Author(s):  
Caimei Zhao ◽  
Lei Chen ◽  
Chuanming Yu ◽  
Binghua Hu ◽  
Haoxuan Huang ◽  
...  
Keyword(s):  
Oil Spills ◽  
Low Cost ◽  
Pickering Emulsion ◽  
Template Method ◽  
Water Separation ◽  
Environment Friendly ◽  
Oil Water Separation ◽  
Oil Water ◽  
Cost Efficient

Super-hydrophobic porous absorbent is a convenient, low-cost, efficient and environment-friendly material in the treatment of oil spills. In this work, a simple Pickering emulsion template method was employed to fabricate...

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 Surface Engineering of Ceramic Nanomaterials for Separation of Oil/Water Mixtures

2020 ◽  
Vol 8 ◽  
Author(s):  
Usama Zulfiqar ◽  
Andrew G. Thomas ◽  
Allan Matthews ◽  
David J. Lewis
Keyword(s):  
Surface Engineering ◽  
Oil Spills ◽  
Chemical Interaction ◽  
Low Cost ◽  
Water Mixture ◽  
Water Separation ◽  
Manufacturing Operations ◽  
Industrial Oil ◽  
Oil Water Separation ◽  
Oil Water

Oil/water mixtures are a potentially major source of environmental pollution if efficient separation technology is not employed during processing. A large volume of oil/water mixtures is produced via many manufacturing operations in food, petrochemical, mining, and metal industries and can be exposed to water sources on a regular basis. To date, several techniques are used in practice to deal with industrial oil/water mixtures and oil spills such as in situ burning of oil, bioremediation, and solidifiers, which change the physical shape of oil as a result of chemical interaction. Physical separation of oil/water mixtures is in industrial practice; however, the existing technologies to do so often require either dissipation of large amounts of energy (such as in cyclones and hydrocyclones) or large residence times or inventories of fluids (such as in decanters). Recently, materials with selective wettability have gained attention for application in separation of oil/water mixtures and surfactant stabilized emulsions. For example, a superhydrophobic material is selectively wettable toward oil while having a poor affinity for the aqueous phase; therefore, a superhydrophobic porous material can easily adsorb the oil while completely rejecting the water from an oil/water mixture, thus physically separating the two components. The ease of separation, low cost, and low-energy requirements are some of the other advantages offered by these materials over existing practices of oil/water separation. The present review aims to focus on the surface engineering aspects to achieve selectively wettability in materials and its their relationship with the separation of oil/water mixtures with particular focus on emulsions, on factors contributing to their stability, and on how wettability can be helpful in their separation. Finally, the challenges in application of superwettable materials will be highlighted, and potential solutions to improve the application of these materials will be put forward.

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.

Fabrication of robust 3D superhydrophobic material by a simple and low-cost method for oil-water separation and oil absorption

2017 ◽  
Vol 224 ◽  
pp. 117-124 ◽  
Author(s):  
Chuqi Zhang ◽  
Yanmei Li ◽  
Ningning Bai ◽  
Cui Tan ◽  
Peng Cai ◽  
...  
Keyword(s):  
Low Cost ◽  
Oil Absorption ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Low cost carbon fiber aerogel derived from bamboo for the adsorption of oils and organic solvents with excellent performances

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38470-38478 ◽  
Author(s):  
Sudong Yang ◽  
Lin Chen ◽  
Lei Mu ◽  
Bin Hao ◽  
Peng-Cheng Ma
Keyword(s):  
Carbon Fiber ◽  
Organic Solvents ◽  
Low Cost ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Ultralight, re-resistant and flexible carbon fiber aerogel is prepared by using disposable bamboo chopsticks as precursor. The aerogel can be used for oil–water separation and recycled for many times by distillation, combustion or squeeze.

scholarly journals An innovative, fast and facile soft-template approach for the fabrication of porous PDMS for oil–water separation

2017 ◽  
Vol 5 (45) ◽  
pp. 23785-23793 ◽  
Author(s):  
A. Turco ◽  
E. Primiceri ◽  
M. Frigione ◽  
G. Maruccio ◽  
C. Malitesta
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Soft Template ◽  
Oil Uptake ◽  
Uptake Capacity ◽  
Water Separation ◽  
Oil Leakage ◽  
Oil Water Separation ◽  
Oil Water

A faster, low-cost and facile soft-template approach to fabricate porous polydimethylsiloxane sponges is proposed. The sponges exhibited selective oil uptake capacity, excellent mechanical properties, and high reusability, all features that make them useful systems for plugging oil leakage.

scholarly journals A Robust Superhydrophobic Polyurethane Sponge Loaded with Multi-Walled Carbon Nanotubes for Efficient and Selective Oil-Water Separation

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3344
Author(s):  
De Liu ◽  
Shiying Wang ◽  
Tao Wu ◽  
Yujiang Li
Keyword(s):  
Ionic Strength ◽  
Absorptive Capacity ◽  
Large Scale ◽  
Low Cost ◽  
Absorption Capacity ◽  
Effect Of Temperature ◽  
Water Contact ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

The influence of different coupling agents and coupling times on the wettability of a polyurethane (PU) sponge surface were optimized. Octadecyltrichlorosilane (OTS) was selected as the optimal coupling agent to prepare the superhydrophobic sponge. The superhydrophobic sponge was prepared in one step, which has the advantages of simple operation and enhanced durability. The superhydrophobic sponge was characterized by scanning electron microscopy, Teclis Tracker tensiometry, and Fourier transform infrared (FT-IR) spectrophotometry. The water contact angle increased from 64.1° to 151.3°, exhibiting ideal superhydrophobicity. Oils and organic solvents with different viscosities and densities can be rapidly and selectively absorbed by superhydrophobic sponges, with an absorption capacity of 14.99 to 86.53 times the weight of the sponge itself, without absorbing any water. Since temperature affects the viscosity and ionic strength of oil, and influences the surface wettability of the sponges, the effect of temperature and ionic strength on the oil absorption capacity of the superhydrophobic sponges was measured, and its mechanism was elucidated. The results showed that the absorptive capacity retained more than 90% of the initial absorptive capacity after repeated use for 10 times. Low-cost, durable superhydrophobic sponges show great potential for large-scale oil-water separation.

scholarly journals Fabrication of PDMS@Fe3O4/MS Composite Materials and Its Application for Oil-Water Separation

Materials ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 115
Author(s):  
Jiaqi Wang ◽  
Zhenzhong Fan ◽  
Qingwang Liu ◽  
Qilei Tong ◽  
Biao Wang
Keyword(s):  
Magnetic Force ◽  
Oil Spills ◽  
Low Cost ◽  
Oily Wastewater ◽  
Water Separation ◽  
Simple Preparation ◽  
Oil Water Separation ◽  
Absorbing Material ◽  
Oil Water ◽  
Nano Fe3o4

The discharge of oily wastewater and oil spills at sea are the current difficulties in water pollution control. This problem often leads to terrible disasters. Therefore, the effective realization of oil-water separation is a very challenging problem. Superhydrophobic sponge is a promising oil-absorbing material. In this article, we reported a superhydrophobic sponge with nano-Fe3O4 for oil-water separation. The addition of nano-Fe3O4 allows the sponge to be recycled under the action of magnetic force. The sponge has the advantages of low cost, simple preparation and efficient oil-water separation. This kind of sponge is very worthy of promotion for the treatment of oily wastewater and marine oil spill accidents.

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