Facile synthesis of graphene oxide with significant enhanced properties for optoelectronic and energy devices

Aslam, Saad; Mustafa, Faiza; Ahmad, Muhammad Ashfaq

doi:10.1016/j.ceramint.2018.01.105

Cited by 18 publications

(14 citation statements)

References 43 publications

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“…In addition to this spectrum overtone bands 2D, D + G ~ G 0 and 2G are also observed at 2688, 2952, 3140 cm −1 respectively which are highly effected by the oxidation of the graphitic structure 32 , 33 . As the ratio of the two bands I 2D /I G is 0.11 and it can be referred to multilayer graphene oxide.…”

Section: Resultsmentioning

confidence: 86%

“…The intensities of the D and G bands are 820 and 969 cm −1 and the defect ratio (I D /I G ) of is 0.846 confirms that the oxygenated functional groups (carboxylic, epoxide and hydroxyl) invade into the graphitic domain 31 . In addition to this spectrum overtone bands 2D, D + G ~ G 0 and 2G are also observed at 2688, 2952, 3140 cm −1 respectively which are highly effected by the oxidation of the graphitic structure 32,33 . As the ratio of the two bands I 2D /I G is 0.11 and it can be referred to multilayer graphene oxide.…”

Section: Resultsmentioning

confidence: 87%

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Synergistic antibacterial activity of surfactant free Ag–GO nanocomposites

Ahmad

Aslam

Mustafa

et al. 2021

Sci Rep

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Graphene oxide–silver (Ag–GO) nanocomposite has emerged as a vital antibacterial agent very recently. In this work, we report a facile one step route of Ag–GO nanocomposite formation excluding the aid of surfactants and reductants and was successfully applied to negative Escherichia Coli (E coli) to investigate antibacterial activity by varying doze concentration. The successful formation of Ag–GO nanocomposite via facile one step route was confirmed using Fourier transform infrared spectroscopy (FTIR) and Raman Spectroscopy. The absorption spectra (peak ~ 300 nm) for GO and the (peak ~ 420 nm) for silver nanoparticles were observed. XRD study confirmed the formation of Ag–GO nanocomposite while atomic force microscopy (AFM) showed crumbled GO sheets decorated with Ag nanoparticles. It was observed that the functional groups of GO facilitated the binding of Ag nanoparticles to GO network and enhanced the antibacterial activity of the nanocomposite.

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Section: Resultsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 87%

Synergistic antibacterial activity of surfactant free Ag–GO nanocomposites

Ahmad

Aslam

Mustafa

et al. 2021

Sci Rep

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“…The G 1 component is associated with the in-plane stretching vibration . The G 2 component can be attributed to the bond angle disorder and surface functional groups (O–H). , The I D / I G1 and I G2 / I G1 intensity ratios were found to be 0.98 and 0.52 for GO. The second order overtone, 2D, is due to the two-phonon double resonance, while the D+G band is attributed to higher structure disorder of GO…”

Section: Resultsmentioning

confidence: 93%

“…The D band arises from the defect-induced breathing modes of sp 2 rings. 66 The G 1 component is associated with the in-plane stretching vibration. 67 The G 2 component can be attributed to the bond angle disorder and surface functional groups (O–H).…”

Section: Resultsmentioning

confidence: 99%

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Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Lazauskas

Marcinauskas

Andrulevičius

2020

ACS Appl. Mater. Interfaces

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Herein, photothermal modification of nanocomposite films consisting of hydrated vanadium pentoxide (V 2 O 5 · n H 2 O) nanoribbons wrapped with graphene oxide (GO) flakes was performed via 405 nm direct laser irradiation. The combination of X-ray diffraction, X-ray photoelectron spectroscopy, Raman scattering, transmission electron microscopy, and scanning electron microscopy allowed comprehensive characterization of physical and chemical changes of GO/V 2 O 5 · n H 2 O nanocomposite films upon photothermal modification. The modified nanocomposite films exhibited porous surface morphology (17.27 m 2 g –1 ) consisting of randomly distributed pillarlike protrusions. The photothermal modification process of GO/V 2 O 5 · n H 2 O enhanced the electrical conductivity of nanocomposite from 1.6 to 6.8 S/m. It was also determined that the direct laser irradiation of GO/V 2 O 5 · n H 2 O resulted in considerable decrease of C–O bounds as well as O–H functional groups with an increase of the laser power density.

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Graphene as Catalyst Support for the Reactions in Fuel Cells

Stevanović

Jovanović

2019

Handbook of Graphene

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Facile synthesis of graphene oxide with significant enhanced properties for optoelectronic and energy devices

Cited by 18 publications

References 43 publications

Synergistic antibacterial activity of surfactant free Ag–GO nanocomposites

Synergistic antibacterial activity of surfactant free Ag–GO nanocomposites

Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation

Graphene as Catalyst Support for the Reactions in Fuel Cells

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Facile synthesis of graphene oxide with significant enhanced properties for optoelectronic and energy devices

Cited by 18 publications

References 43 publications

Synergistic antibacterial activity of surfactant free Ag–GO nanocomposites

Synergistic antibacterial activity of surfactant free Ag–GO nanocomposites

Modification of Graphene Oxide/V2O5·nH2O Nanocomposite Films via Direct Laser Irradiation

Graphene as Catalyst Support for the Reactions in Fuel Cells

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Product

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Modification of Graphene Oxide/V₂O₅·nH₂O Nanocomposite Films via Direct Laser Irradiation