Hydrothermally reduced graphene oxide as a supercapacitor

Johra, Fatima Tuz; Jung, Woo-Gwang

doi:10.1016/j.apsusc.2015.09.128

Cited by 239 publications

(99 citation statements)

References 19 publications

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“…As a result of the reduction, this peak disappeared and a new peak appeared in the range of 2θ≈26 deg. Also, the XPS patterns of GO, rGO, the presence of marked bands (O-C=O, C-O, C=O, and sp 2 C), and the specific displacements in these patterns (figures 2(b)-(d)) showed that GO was well reduced under hydrothermal conditions [19,38]. Figure 3 shows the SEM image of consolidated sample, FESEM and TEM images of HA-rGO powders and FESEM images of HA-rGO nanocomposite after SPS.…”

Section: Preparation Of Ha-rgo Nanocompositementioning

confidence: 94%

Investigating the mechanical behavior of hydroxyapatite-reduced graphene oxide nanocomposite under different loading rates

Nosrati

Sarraf-Mamoory

et al. 2020

Nano Ex.

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In this study, the hydroxyapatite (HA)-reduced graphene oxide (rGO) nanocomposite was investigated for its mechanical properties. The nanocomposite used in this study was made in two stages. The HA-rGO powders were first synthesized by hydrogen gas injected hydrothermal method, and then consolidated by spark plasma sintering. HA-rGO nanocomposite was subjected to Vickers indentation experiments with different loading rates. Various analyzes have been used in this study, including x-rays diffraction, field emission scanning electron microscopy, high-resolution transmission electron microscopy, fast fourier transform, and inverse fast fourier transform. The findings of this study showed that the HA in this nanocomposite was reinforced with rGO sheets coated with HA. As the loading rate increased, the slope of the curves in the elastic region was increased, indicating that the elastic modulus was increased. Also, the contact depth at higher loading rates was increased. Plastic deformation was higher at higher loading rates and the hardness had increased. As the loading rate increased from 300 mN to 1 N, the hardness and elastic modulus increased with more slope than when the loading rate changed from 1 N to 2 N. The presence of rGO sheets had partially controlled the HA brittleness.

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Section: Preparation Of Ha-rgo Nanocompositementioning

confidence: 94%

Investigating the mechanical behavior of hydroxyapatite-reduced graphene oxide nanocomposite under different loading rates

Nosrati

Sarraf-Mamoory

et al. 2020

Nano Ex.

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“…Such dispersions with one-or few-layered sheets known as graphene oxide (GO) are often the starting point for reduction and/or functionalization toward specific rGO applications. Graphene-based materials were reported effective as electroactive materials for supercapasitors [10][11][12] and Li + batteries [13], photoactive materials for CO 2 reduction to solar fuels [14][15][16], various pollutants degradation in combination with TiO 2 [17][18][19][20], ZnO [21], CdS [22,23], etc.…”

Section: Introductionmentioning

confidence: 99%

Self-propagating solar light reduction of graphite oxide in water

Todorova

Giannakopoulou

Boukos

et al. 2017

Applied Surface Science

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“…Hydrothermal reduction, exceptionally, is advantageous not only because it is a water solitary reaction, but also because the ionic product of water is high. Thus hydrothermal conditions cause the protonation of OH functionalities which bring about dehydration on the edges or basal planes of GO followed by the π‐bonding restoration ( Figure a,b) . After hydrothermal reduction, oxygenated carbon such as epoxide, hydroxyl, and carboxyl group signals were seen radically shrunk in NMR experiments (Figure c,d).…”

Section: Graphene‐based Materials From Subcritical Hydro‐/solvothermamentioning

confidence: 99%

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

2017

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Many promising graphene-based materials are kept away from mainstream applications due to problems of scalability and environmental concerns in their processing. Hydro-/solvothermal techniques overwhelmingly satisfy both the aforementioned criteria, and have matured as alternatives to wet-chemical methods with advances made over the past few decades. The insolubility of graphene in many solvents poses considerable difficulties in their processing. In this context hydro-/solvothermal techniques present an ideal opportunity for processing of graphenic materials with their versatility in manipulating the physical and thermodynamic properties of the solvent. The flexibility in hydro-/solvothermal techniques for manipulation of solvent composition, temperature and pressure provides numerous handles to manipulate graphene-based materials during synthesis. This review provides a comprehensive look at the subcritical hydro-/solvothermal synthesis of graphene-based functional materials and their applications. Several key synthetic strategies governing the morphology and properties of the products such as temperature, pressure, and solvent effects are elaborated. Advances in the synthesis, doping, and functionalization of graphene in hydro-/solvothermal media are highlighted together with our perspectives in the field.

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Hydrothermally reduced graphene oxide as a supercapacitor

Cited by 239 publications

References 19 publications

Investigating the mechanical behavior of hydroxyapatite-reduced graphene oxide nanocomposite under different loading rates

Investigating the mechanical behavior of hydroxyapatite-reduced graphene oxide nanocomposite under different loading rates

Self-propagating solar light reduction of graphite oxide in water

Advances in Subcritical Hydro‐/Solvothermal Processing of Graphene Materials

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