Oil-Water Separation of Electrospun Cellulose Triacetate Nanofiber Membranes Modified by Electrophoretically Deposited TiO2/Graphene Oxide

Naseem, Saba; Wu, Chang-Mou; Xu, Ting-Zhen; Lai, Chiu‐Chun; Rwei, Syang‐Peng

doi:10.3390/polym10070746

Cited by 38 publications

(14 citation statements)

References 54 publications

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“…Naseem et al prepared TiO 2 /GO/rTAc membrane by introducing GO and TiO 2 coating into cellulose triacetate (TAC) membrane by electrophoretic deposition. The oil-water separation rate could reach up to 98.9%, exhibiting broad application prospect in oil-water separation [190]. Hu et al prepared a GO modified Al 2 O 3 membrane using GO as the modifier by vacuum transfer method, which has longer service life and better separation performance compared with the unmodified membrane [191].…”

Section: Oily Wastewater Treatmentmentioning

confidence: 99%

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Ke-jian

Tang

et al. 2020

Nanomaterials

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Graphene and its derivatives, with their unique two-dimensional structures and excellent physical and chemical properties, have been an international research hotspot both in the research community and industry. However, in application-oriented research in the oil and gas industry they have only drawn attention in the past several years. Their excellent optical, electrical, thermal and mechanical performance make them great candidates for use in oil and gas exploration, drilling, production, and transportation. Combined with the actual requirements for well working fluids, chemical enhanced oil recovery, heavy oil recovery, profile control and water shutoff, tracers, oily wastewater treatment, pipeline corrosion prevention treatment, and tools and apparatus, etc., this paper introduces the behavior in water and toxicity to organisms of graphene and its derivatives in detail, and comprehensively reviews the research progress of graphene materials in the upstream oil and gas industry. Based on this, suggestions were put forward for the future research. This work is useful to the in-depth mechanism research and application scope broadening research in the upstream oil and gas industry.

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Section: Oily Wastewater Treatmentmentioning

confidence: 99%

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Ke-jian

Tang

et al. 2020

Nanomaterials

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“…The layering improved the hydrophilicity of the composite films to wash away oily parts of oil–water emulsions. The resulting membranes exhibited properties of antifouling, self‐cleaning, and high oil rejection coefficients of 98.9% and 88.2% for surfactant‐free and surfactant‐stabilized oil–water emulsions . On the other side, utilizing super hydrophobicity as a key to separate oil from water is explored by fluorinating cellulose nanofibers using trichloro(1H,1H,2H,2H‐heptadecafluorodecyl) silane to induce hydrophobicity from which water rolls off.…”

Section: Other Pollutantsmentioning

confidence: 99%

“…high oil rejection coefficients of 98.9% and 88.2% for surfactantfree and surfactant-stabilized oil-water emulsions. [80] On the other side, utilizing super hydrophobicity as a key to separate oil from water is explored by fluorinating cellulose nanofibers using trichloro(1H,1H,2H,2H-heptadecafluorodecyl) silane to induce hydrophobicity from which water rolls off. The modified nanofiber membranes can separate oil and water with an efficiency of 99% simply using gravitational force as shown in Figure 11.…”

Section: Other Pollutantsmentioning

confidence: 99%

“…Cellulose triacetate/graphene oxide/TiO 2 [80] Oil-water separation 98.9% 5 Fluorinated cellulose nanofibers [81] Oil-water separation 99% 6 PLA/β-cyclodextrins [83] Oil-water separation 95% enhancing the adsorption capacity of chitosan B (136 mg g −1 ) which is higher than chitosan A (117 mg g −1 ) for the removal of chromium. Moreover, chitosan A (136 mg g −1 ) showed higher adsorption of iron than chitosan B (11.3 mg g −1 ) due to steric hindrance resulted from the hydrolysis leading to the release of low-molecular-weight polymer chains from coil structured chitosan.…”

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confidence: 99%

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Bio‐Based Nanofibers Involved in Wastewater Treatment

Gandavadi

Sundarrajan

Ramakrishna

2019

Macro Materials & Eng

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Studies involving bio‐based nanofibers are well utilized in the field of energy, catalysis, electronics, and environmental science. In this review, the importance of utilizing bio‐based materials for the development and optimization of multiplexed nanofibers and the modifications adopted to overcome the drawbacks of conventional electro‐spinning to facilitate better production rates, enhanced adsorption, and its potential in removing heavy metal ions, dyes, and other contaminants polluting the environment are highlighted. This work provides the readers the ability to understand the complexity in fabrication of bio‐based nanofibers focusing primarily on chitosan, cellulose, and protein‐based nanofibers and their mechanism toward quenching/degradation of water contaminants. In addition, it also provides the advantages of using bio‐based materials over synthetic materials for the development of nanofibers.

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“…Research on superhydrophobic [ 1 , 2 ], superoleophobic [ 3 , 4 ], superamphiphobic [ 4 , 5 , 6 , 7 ] and superoleophilic [ 8 , 9 , 10 ] surfaces has developed rapidly in recent years [ 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. Meanwhile, an increasing number of applications for such surfaces, including self-cleaning [ 21 ], anti-fingerprint coatings [ 22 ], anti-fog coatings [ 23 ], microdroplet transfer technology [ 24 ] and oil–water separation [ 25 , 26 , 27 , 28 , 29 , 30 ], have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Micro/Nanoscale Structured Superhydrophilic and Underwater Superoleophobic Hybrid-Coated Mesh for High-Efficiency Oil/Water Separation

et al. 2020

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A novel micro/nanoscale rough structured superhydrophilic hybrid-coated mesh that shows underwater superoleophobic behavior is fabricated by spray casting or dipping nanoparticle–polymer suspensions on stainless steel mesh substrates. Water droplets can spread over the mesh completely; meanwhile, oil droplets can roll off the mesh at low tilt angles without any penetration. Besides overcoming the oil-fouling problem of many superhydrophilic coatings, this superhydrophilic and underwater superoleophobic mesh can be used to separate oil and water. The simple method used here to prepare the organic–inorganic hybrid coatings successfully produced controllable micro-nano binary roughness and also achieved a rough topography of micro-nano binary structure by controlling the content of inorganic particles. The mechanism of oil–water separation by the superhydrophilic and superoleophobic membrane is rationalized by considering capillary mechanics. Tetraethyl orathosilicate (TEOS) as a base was used to prepare the nano-SiO2 solution as a nano-dopant through a sol-gel process, while polyvinyl alcohol (PVA) was used as the film binder and glutaraldehyde as the cross-linking agent; the mixture was dip-coated on the surface of 300-mesh stainless steel mesh to form superhydrophilic and underwater superoleophobic film. Properties of nano-SiO2 represented by infrared spectroscopy and surface topography of the film observed under scanning electron microscope (SEM) indicated that the film surface had a coarse micro–nano binary structure; the effect of nano-SiO2 doping amount on the film’s surface topography and the effect of such surface topography on hydrophilicity of the film were studied; contact angle of water on such surface was tested as 0° by the surface contact angle tester and spread quickly; the underwater contact angle to oil was 158°, showing superhydrophilic and underwater superoleophobic properties. The effect of the dosing amount of cross-linking agent to the waterproof swelling property and the permeate flux of the film were studied; the oil–water separation effect of the film to oil–water suspension and oil–water emulsion was studied too, and in both cases the separation efficiency reached 99%, which finally reduced the oil content to be lower than 50 mg/L. The effect of filtration times to permeate flux was studied, and it was found that the more hydrophilic the film was, the stronger the stain resistance would be, and the permeate flux would gradually decrease along with the increase of filtration times.

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Oil-Water Separation of Electrospun Cellulose Triacetate Nanofiber Membranes Modified by Electrophoretically Deposited TiO2/Graphene Oxide

Cited by 38 publications

References 54 publications

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Applications of Graphene and Its Derivatives in the Upstream Oil and Gas Industry: A Systematic Review

Bio‐Based Nanofibers Involved in Wastewater Treatment

Micro/Nanoscale Structured Superhydrophilic and Underwater Superoleophobic Hybrid-Coated Mesh for High-Efficiency Oil/Water Separation

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