Synthesis of Interfacially Active and Magnetically Responsive Nanoparticles for Multiphase Separation Applications

Peng, Junxia; Liu, Qingxia; Xu, Zhenghe; Masliyah, Jacob H.

doi:10.1002/adfm.201102156

Cited by 143 publications

(97 citation statements)

References 72 publications

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“…3(b1), the c-Fe 2 O 3 nanoparticles were positive charged with the average zeta potential value of 11.48 mV. While the zeta potential of c-Fe 2 O 3 @SiO 2 became negative of À44.87 mV, which is good agreement with that of silica at the same condition [28,29]. The result confirmed that the c- again ($7.14 mV) due to the protonation of amino groups on the silica surface.…”

Section: Characterization Of Various Nanoparticlessupporting

confidence: 74%

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Recyclable magnetic graphene oxide for rapid and efficient demulsification of crude oil-in-water emulsion

Liu

Wang

et al. 2017

Fuel

139

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h i g h l i g h t sThe M-GO was a high efficiency demulsifier which could be reused for 6-7 times. The non-covalent interaction analysis proved that p-p and r-p interactions between GO materials and asphaltene molecules are the major driven forces for demulsification. Graphene oxide (GO) nanosheets have been experimentally proved to be a highly efficiency, rapid and universal demulsifier to break up the crude oil-in-water emulsion and/or the emulsified oily waste water in our previous study. To recycle the GO nanosheets and avoid the possible contamination of GO for crude oil, in this work, the magnetic graphene oxide (M-GO) was successfully synthesized and used for separating oil/water emulsions. Demulsification tests indicated that M-GO could separate the oil/water emulsions within a few minutes and recycle 6-7 times without losing its demulsification capability. The residual oil content in the separated water was as low as $10 mg/L, corresponding to a demulsification efficiency of 99.98% at an optimal dosage. Quantum chemical calculation results indicated that the p-p/r-p interactions between GO materials and asphaltene molecules are the major driven forces for the high demulsification performance of M-GO nanosheets. This work not only provides a promising demulsifies to demulsify the crude oil-in-water emulsion or the oily wastewater but also give a deep understanding on the intrinsic interaction between demulsifiers and asphaltenes.

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Section: Characterization Of Various Nanoparticlessupporting

confidence: 74%

“…Zeta potential of various nanopaticles collected from each stage of preparation were determined in the 1 mM KCl aqueous solutions with pH of 5.3 [28]. As shown in Fig.…”

Section: Characterization Of Various Nanoparticlesmentioning

confidence: 99%

Recyclable magnetic graphene oxide for rapid and efficient demulsification of crude oil-in-water emulsion

Liu

Wang

et al. 2017

Fuel

139

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“…[64][65][66][67] Due to biocompatible and biodegradable nature, cellulose based stimuliresponsive materials have shown great potential in electro-stimulated targeted drug delivery systems. 68,69 CNCs with high aspect ratio and mechanically stiff fibers can serve as renewable reinforcing agents in nanocomposites, as well as a handle for adding stimuli responsiveness.…”

Section: Smart Materials and Structuresmentioning

confidence: 99%

Review of nanocellulose for sustainable future materials

Kim

Shim

Kim

et al. 2015

Int. J. of Precis. Eng. and Manuf.-Green Tech.

436

219

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Cellulose, the chain of glucose residues easily obtained from nature, is the most common natural polymer. Owing to its own unique material properties, compared to the conventional usage, nanocellulose (NC) with a crystalline structure can be considered to be used in various industrial applications. As a novel sustainable future material, we review the recent achievements of NC from the view point of material extraction and the composite processes to some extended important applications. While the mechanical properties of NCs and the energy consumption during their composite processing are the key considerations, their application potentials have never been limited to mechanical or commodity products as conventional celluloses. In the latter part of this review, emerging engineering applications of NCs such as energy storage, flexible electronics, and smart materials will be further discussed for readers searching future high-end eco-friendly functional materials. Also some suggestions for potential applications will be also discussed.

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“…Recently, a novel approach to chemical demulsification has been demonstrated through the synthesis of a magnetically responsive demulsifier that can be manipulated under a magnetic field and hence recovered for reuse. 71,72 The concept of synthesizing magnetic-ethylcellulose (M-EC) nanoparticles is illustrated in Figure 11.22. Firstly, magnetite (Fe 3 O 4 ) nanoparticles are coated with a thin layer of silica using a dense liquid silica coating method to protect the magnetic particle and make the surface amenable for further functionalization.…”

Section: Magnetic Responsive Ec Demulsifier (M-ec)mentioning

confidence: 99%