Underwater superoleophobic carbon nanotubes/core–shell polystyrene@Au nanoparticles composite membrane for flow-through catalytic decomposition and oil/water separation

2016 ◽  
Vol 4 (28) ◽  
pp. 10810-10815 ◽  
Author(s):  
Lei Zhang ◽  
Jincui Gu ◽  
Liping Song ◽  
Lu Chen ◽  
Youju Huang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Composite Membrane ◽  
Au Nanoparticles ◽  
Catalytic Decomposition ◽  
Core Shell ◽  
Water Separation ◽  
Oil Water Separation ◽  
Flow Through ◽  
Oil Water

A hierarchical composite membrane with underwater superoleophobic surface and underlying catalytic microspheres is fabricated to achieve simultaneous flow-through catalytic decomposition and oil/water separation.

scholarly journals Carbon Nanotubes and Polydopamine Modified Poly(dimethylsiloxane) Sponges for Efficient Oil–Water Separation

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2431
Author(s):  
Wen Zhang ◽  
Juanjuan Wang ◽  
Xue Han ◽  
Lele Li ◽  
Enping Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
Absorption Capacity ◽  
Potential Candidate ◽  
Hard Template ◽  
Water Separation ◽  
Industrial Oil ◽  
The Matrix ◽  
Oil Water Separation ◽  
Oil Water

In this paper, effective separation of oil from both immiscible oil–water mixtures and oil-in-water (O/W) emulsions are achieved by using poly(dimethylsiloxane)-based (PDMS-based) composite sponges. A modified hard template method using citric acid monohydrate as the hard template and dissolving it in ethanol is proposed to prepare PDMS sponge composited with carbon nanotubes (CNTs) both in the matrix and the surface. The introduction of CNTs endows the composite sponge with enhanced comprehensive properties including hydrophobicity, absorption capacity, and mechanical strength than the pure PDMS. We demonstrate the successful application of CNT-PDMS composite in efficient removal of oil from immiscible oil–water mixtures within not only a bath absorption, but also continuous separation for both static and turbulent flow conditions. This notable characteristic of the CNT-PDMS sponge enables it as a potential candidate for large-scale industrial oil–water separation. Furthermore, a polydopamine (PDA) modified CNT-PDMS is developed here, which firstly realizes the separation of O/W emulsion without continuous squeezing of the sponge. The combined superhydrophilic and superoleophilic property of PDA/CNT-PDMS is assumed to be critical in the spontaneously demulsification process.

Amphiphilic hyperbranched polyethyleneimine for highly efficient oil–water separation

2020 ◽  
Vol 8 (5) ◽  
pp. 2412-2423 ◽  
Author(s):  
Shu Yan ◽  
Guijin He ◽  
Dengfeng Ye ◽  
Yongsheng Guo ◽  
Wenjun Fang
Keyword(s):  
Phase Separation ◽  
Soft Matter ◽  
Polymer Layer ◽  
Core Shell ◽  
Water Separation ◽  
Highly Efficient ◽  
Oil Water Separation ◽  
Oil Water

Core–shell structural amphiphilic soft matter, HPEI-g-Cn, can achieve phase separation thoroughly, in which an interfacial active-polymer layer is formed after demulsification.

CNTs/TiO2 composite membrane with adaptable wettability for on-demand oil/water separation

2020 ◽  
Vol 275 ◽  
pp. 124011
Author(s):  
Luke Yan ◽  
Chaohui Liu ◽  
Junyuan Xia ◽  
Min Chao ◽  
Wenqin Wang ◽  
...  
Keyword(s):  
Composite Membrane ◽  
Water Separation ◽  
On Demand ◽  
Oil Water Separation ◽  
Oil Water

scholarly journals Efficient Oil/Water Separation Membrane Derived from Super-Flexible and Superhydrophilic Core–Shell Organic/Inorganic Nanofibrous Architectures

Polymers ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 974 ◽  
Author(s):  
Zhi Liu ◽  
Detao Qin ◽  
Jianghui Zhao ◽  
Quan Feng ◽  
Zhengtao Li ◽  
...  
Keyword(s):  
Separation Efficiency ◽  
Scale Up ◽  
Core Shell ◽  
Water Separation ◽  
Membrane Performance ◽  
Novel Approach ◽  
Separation Membrane ◽  
Oil Water Separation ◽  
Oil Water ◽  
Nanofibrous Membranes

To address the worldwide oil and water separation issue, a novel approach was inspired by natural phenomena to synthesize superhydrophilic and underwater superoleophobic organic/inorganic nanofibrous membranes via a scale up fabrication approach. The synthesized membranes possess a delicate organic core of PVDF-HFP and an inorganic shell of a CuO nanosheet structure, which endows super-flexible properties owing to the merits of PVDF-HFP backbones, and superhydrophilic functions contributed by the extremely rough surface of a CuO nanosheet anchored on flexible PVDF-HFP. Such an organic core and inorganic shell architecture not only functionalizes membrane performance in terms of antifouling, high flux, and low energy consumption, but also extends the lifespan by enhancing its mechanical strength and alkaline resistance to broaden its applicability. The resultant membrane exhibits good oil/water separation efficiency higher than 99.7%, as well as excellent anti-fouling properties for various oil/water mixtures. Considering the intrinsic structural innovation and its integrated advantages, this core–shell nanofibrous membrane is believed to be promising for oil/water separation, and this facile approach is also easy for scaled up manufacturing of functional organic/inorganic nanofibrous membranes with insightful benefits for industrial wastewater treatment, sensors, energy production, and many other related areas.

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