Graphene derivatives/Fe3O4/polymer nanocomposite films: Optical and electrical properties

Hatel, Rhizlane; Goumri, Meryem; Ratier, Bernard; Baïtoul, Mimouna

doi:10.1016/j.matchemphys.2017.02.013

Cited by 22 publications

(15 citation statements)

References 39 publications

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“…The formation of rGO sheets and magnetite nanoparticles in M-rGO nanocomposites was further confirmed by Raman spectroscopy, which is sensitive to changes in the carbon structure [36]. Fig 3 compares the Raman spectra of GO and M-rGO nanocomposites synthesized under different stirring durations.…”

Section: Plos Onementioning

confidence: 74%

Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

et al. 2020

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Oily wastewater, especially water-oil emulsion has become serious environmental issue and received global attention. Chemical demulsifiers are widely used to treat oil-water emulsion, but the toxicity, non-recyclable and non-environmental friendly characteristic of chemical demulsifiers had limited their practical application in oil-water separation. Therefore, it is imperative to develop an efficient, simple, eco-friendly and recyclable demulsifiers for breaking up the emulsions from the oily wastewater. In this study, a magnetic demulsifier, magnetite-reduced graphene oxide (M-rGO) nanocomposites were proposed as a recyclable demulsifier to break up the surfactant stabilized crude oil-in-water (O/W) emulsion. M-rGO nanocomposites were prepared via in situ chemical synthesis by using only one type Fe salt and GO solid as precursor at room temperature. The prepared composites were fully characterized by various techniques. The effect of demulsifier dosage and pH of emulsion on demulsification efficiency (E D) has been studied in detailed. The demulsification mechanism was also proposed in this study. Results showed that M-rGO nanocomposites were able to demulsify crude O/W emulsion. The E D reaches 99.48% when 0.050 wt.% of M-rGO nanocomposites were added to crude O/W emulsion (pH = 4). Besides, M-rGO nanocomposites can be recycled up to 7 cycles without showing a significant change in terms of E D. Thus, M-rGO nanocomposite is a promising demulsifier for surfactant stabilized crude O/W emulsion.

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Section: Plos Onementioning

confidence: 74%

Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

et al. 2020

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“…36 The peaks in the range from 1300 to 1700 cm À1 for Fe 3 O 4 -NH 2 can be attributed to the in-plane bond-stretching of sp 2 hybridized carbon atoms, the presence of defects, and the specic ligand (-NH 2 ) on the surface of Fe 3 O 4 -NH 2 . 37 The characteristic peaks at $1573 and $1352 cm À1 for PmPDs are attributed to the benzenoid and quinoid bands, respectively. 38 As observed from Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of a core–shell magnetic Fe₃O₄–NH₂@PmPD nanocomposite for efficient removal of Cr(vi) from aqueous media

Zhu

Fang

et al. 2017

RSC Adv.

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“…In each case, three PL peaks were fitted for the broad visible emission band (in the range of 450–650 nm) and one peak for the UV emission peaked at around 382–388 nm. Apparently, samples exhibit luminescence bands at 517–521 nm that can be related to the emission from defect states due to the presence of oxygen functional groups [ 45 ]. Two others peaks at 565–570 nm and 618–624 nm were associated with optical transitions from the VO level and extended oxygen vacancy states to the valance band, respectively [ 42 , 46 ].…”

Section: Resultsmentioning

confidence: 99%

Graphene Oxide Concentration Effect on the Optoelectronic Properties of ZnO/GO Nanocomposites

et al. 2020

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In this work, the effects of graphene oxide (GO) concentrations (1.5 wt.%, 2.5 wt.%, and 5 wt.%) on the structural, morphological, optical, and luminescence properties of zinc oxide nanorods (ZnO NRs)/GO nanocomposites, synthesized by a facile hydrothermal process, were investigated. X-ray diffraction (XRD) patterns of NRs revealed the hexagonal wurtzite structure for all composites with an average coherence length of about 40–60 nm. A scanning electron microscopy (SEM) study confirmed the presence of transparent and wrinkled, dense GO nanosheets among flower-like ZnO nanorods, depending on the GO amounts used in preparation. Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), ultraviolet–visible (UV–Vis) absorption spectroscopy, and photoluminescence (PL) measurements revealed the impact of GO concentration on the optical and luminescence properties of ZnO NRs/GO nanocomposites. The energy band gap of the ZnO nanorods was independent of GO concentration. Photoluminescence spectra of nanocomposites showed a significant decrease in the intensities in the visible light range and red shifted suggesting a charge transfer process. The nanocomposites’ chromaticity coordinates for CIE 1931 color space were estimated to be (0.33, 0.34), close to pure white ones. The obtained results highlight the possibility of using these nanocomposites to achieve good performance and suitability for optoelectronic applications.

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Graphene derivatives/Fe3O4/polymer nanocomposite films: Optical and electrical properties

Cited by 22 publications

References 39 publications

Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

Synthesis of a core–shell magnetic Fe₃O₄–NH₂@PmPD nanocomposite for efficient removal of Cr(vi) from aqueous media

Graphene Oxide Concentration Effect on the Optoelectronic Properties of ZnO/GO Nanocomposites

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Graphene derivatives/Fe3O4/polymer nanocomposite films: Optical and electrical properties

Cited by 22 publications

References 39 publications

Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

Magnetically recoverable magnetite-reduced graphene oxide as a demulsifier for surfactant stabilized crude oil-in-water emulsion

Synthesis of a core–shell magnetic Fe3O4–NH2@PmPD nanocomposite for efficient removal of Cr(vi) from aqueous media

Graphene Oxide Concentration Effect on the Optoelectronic Properties of ZnO/GO Nanocomposites

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Synthesis of a core–shell magnetic Fe₃O₄–NH₂@PmPD nanocomposite for efficient removal of Cr(vi) from aqueous media