scholarly journals Syntheses Approach of 2-D Oxide Family of Graphene for Supercapacitor Application (A-Review)

2020 ◽  
Vol 36 (6) ◽  
pp. 1016-1025
Author(s):  
PARIMAL ROUTH
Keyword(s):  
Graphene Oxide ◽  
Mechanical Strength ◽  
Surface Area ◽  
Review Paper ◽  
Modern Science ◽  
Large Surface Area ◽  
Synthetic Methods ◽  
Supercapacitor Application ◽  
Material Chemistry ◽  
Reduced Graphene

More recently, 2-D graphene oxide (GO)/reduced graphene (rGO) have altered the direction of modern science with material chemistry and physics by research as they offer different key advantages. These are (i) atomically thin 2-D nanosheets (NSs) provide a large surface area (ii) presence of maximum chemically reactive sites, and (iii) higher mechanical strength and flexibility. Considering the progresses of graphene research, we broadly and crucially discuss the formation of the growing family of 2-D GO/rGO in this review paper. Synthesis methodologies are compared, focusing to offer signs for emerging novel and adaptable synthetic methods. Their advantage use in the fields of supercapacitor are highlighted in this review.

Facile synthesis of NiCo2O4-anchored reduced graphene oxide nanocomposites as efficient additives for improving the dehydrogenation behavior of lithium alanate

2020 ◽  
Vol 7 (5) ◽  
pp. 1257-1272 ◽  
Author(s):  
Yongpeng Xia ◽  
Sheng Wei ◽  
Qiang Huang ◽  
Jianquan Li ◽  
Xinghua Cen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Large Surface Area ◽  
Facile Synthesis ◽  
Reduced Graphene ◽  
Mesoporous Structures

Large surface area and mesoporous structures provided by NiCo2O4@rGO nanocomposites play a synergistic role in remarkably improving the dehydrogenation properties of LiAlH4.

scholarly journals Carbon-Based Nanomaterials for Plasmonic Sensors: A Review

Sensors ◽  
2019 ◽  
Vol 19 (16) ◽  
pp. 3536 ◽  
Author(s):  
Banshi D. Gupta ◽  
Anisha Pathak ◽  
Vivek Semwal
Keyword(s):  
Graphene Oxide ◽  
Surface Area ◽  
Sensitivity Enhancement ◽  
Large Surface Area ◽  
Plasmonic Sensors ◽  
Spr Sensor ◽  
Reduced Graphene ◽  
Dna Antibodies ◽  
Carbon Based Nanomaterials ◽  
Carbon Based

The surface plasmon resonance (SPR) technique is a remarkable tool, with applications in almost every area of science and technology. Sensing is the foremost and majorly explored application of SPR technique. The last few decades have seen a surge in SPR sensor research related to sensitivity enhancement and innovative target materials for specificity. Nanotechnological advances have augmented the SPR sensor research tremendously by employing nanomaterials in the design of SPR-based sensors, owing to their manifold properties. Carbon-based nanomaterials, like graphene and its derivatives (graphene oxide (GO)), (reduced graphene oxide (rGO)), carbon nanotubes (CNTs), and their nanocomposites, have revolutionized the field of sensing due to their extraordinary properties, such as large surface area, easy synthesis, tunable optical properties, and strong compatible adsorption of biomolecules. In SPR based sensors carbon-based nanomaterials have been used to act as a plasmonic layer, as the sensitivity enhancement material, and to provide the large surface area and compatibility for immobilizing various biomolecules, such as enzymes, DNA, antibodies, and antigens, in the design of the sensing layer. In this review, we report the role of carbon-based nanomaterials in SPR-based sensors, their current developments, and challenges.

Preparation of porous reduced graphene oxide using cellulose acetate for high performance capacitive desalination

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70532-70536 ◽  
Author(s):  
Penghui Wang ◽  
Guoqian Lu ◽  
Huan Yan ◽  
Wei Ni ◽  
Min Xu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Porous Structure ◽  
Cellulose Acetate ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
High Performance ◽  
Three Dimensional ◽  
Large Surface Area ◽  
Porous Graphene ◽  
Reduced Graphene

A three-dimensional porous graphene electrode is prepared by using cellulose acetate as a template. The electrode possesses ideal porous structure and large surface area, therefore resulting in high electrosorption capacity for CDI application.

Direct growth of thermally reduced graphene oxide on carbon fiber for enhanced mechanical strength

2020 ◽  
Vol 193 ◽  
pp. 108010
Author(s):  
Beom-Gon Cho ◽  
Shalik Ram Joshi ◽  
Jaekyo Lee ◽  
Young-Bin Park ◽  
Gun-Ho Kim
Keyword(s):  
Graphene Oxide ◽  
Carbon Fiber ◽  
Mechanical Strength ◽  
Reduced Graphene Oxide ◽  
Reduced Graphene ◽  
Direct Growth

scholarly journals Reduced Graphene Oxide-Supported Pt-Based Catalysts for PEM Fuel Cells with Enhanced Activity and Stability

Catalysts ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 256
Author(s):  
Irina V. Pushkareva ◽  
Artem S. Pushkarev ◽  
Valery N. Kalinichenko ◽  
Ratibor G. Chumakov ◽  
Maksim A. Soloviev ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Surface Area ◽  
Pem Fuel Cells ◽  
Polyol Process ◽  
Proton Exchange ◽  
Active Surface Area ◽  
Electrochemical Performances ◽  
Simultaneous Reduction ◽  
Reduced Graphene

Platinum (Pt)-based electrocatalysts supported by reduced graphene oxide (RGO) were synthesized using two different methods, namely: (i) a conventional two-step polyol process using RGO as the substrate, and (ii) a modified polyol process implicating the simultaneous reduction of a Pt nanoparticle precursor and graphene oxide (GO). The structure, morphology, and electrochemical performances of the obtained Pt/RGO catalysts were studied and compared with a reference Pt/carbon black Vulcan XC-72 (C) sample. It was shown that the Pt/RGO obtained by the optimized simultaneous reduction process had higher Pt utilization and electrochemically active surface area (EASA) values, and a better performance stability. The use of this catalyst at the cathode of a proton exchange membrane fuel cell (PEMFC) led to an increase in its maximum power density of up to 17%, and significantly enhanced its performance especially at high current densities. It is possible to conclude that the optimized synthesis procedure allows for a more uniform distribution of the Pt nanoparticles and ensures better binding of the particles to the surface of the support. The advantages of Pt/RGO synthesized in this way over conventional Pt/C are the high electrical conductivity and specific surface area provided by RGO, as well as a reduction in the percolation limit of the components of the electrocatalytic layer due to the high aspect ratio of RGO.

Facile synthesis of Fe3O4nanorod decorated reduced graphene oxide (RGO) for supercapacitor application

RSC Advances ◽  
2016 ◽  
Vol 6 (108) ◽  
pp. 107057-107064 ◽  
Author(s):  
Ashok Kumar Das ◽  
Sumanta Sahoo ◽  
Prabhakarn Arunachalam ◽  
Suojiang Zhang ◽  
Jae-Jin Shim
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Facile Synthesis ◽  
Supercapacitor Application ◽  
Reduced Graphene

We describe a facile approach for the synthesis of RGO–Fe3O4nanorod nanocomposites for high performance supercapacitor application.

scholarly journals Performance stability of solid-state polypyrrole-reduced graphene oxide-modified carbon bundle fiber for supercapacitor application

2018 ◽  
Vol 285 ◽  
pp. 9-15 ◽  
Author(s):  
A.A.B. Hamra ◽  
H.N. Lim ◽  
S.M. Hafiz ◽  
S. Kamaruzaman ◽  
S. Abdul Rashid ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Reduced Graphene Oxide ◽  
Supercapacitor Application ◽  
Reduced Graphene

Reduced Graphene Oxide Supported Molybdenum Oxide Hybrid Nanocomposites: High Performance Electrode Material for Supercapacitor and Photocatalytic Applications

2020 ◽  
Vol 20 (7) ◽  
pp. 4035-4046
Author(s):  
Rengasamy Dhanabal ◽  
Dhanasekaran Naveena ◽  
Sivan Velmathi ◽  
Arumugam Chandra Bose
Keyword(s):  
Electron Microscopy ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Diffuse Reflectance Spectroscopy ◽  
Hybrid Nanocomposites ◽  
X Ray ◽  
Supercapacitor Application ◽  
Quenching Effect ◽  
Reduced Graphene

Using a simple solution based synthesis route, hexagonal MoO3 (h-MoO3) nanorods on reduced graphene oxide (RGO) sheets were prepared. The structure and morphology of resulting RGO-MoO3 nanocomposite were characterized using X-ray diffraction (XRD), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The optical property was studied using UV-Visible diffuse reflectance spectroscopy (UV-Vis DRS) and photoluminescence spectroscopy (PL). The RGO-MoO3 nanocomposites were used as an electrode for supercapacitor application and photocatalyst for photodegradation of methylene blue (MB) and rhodamine B (RhB) under visible light irradiation. We demonstrated that the RGO-MoO3 electrode is capable of delivering high specific capacitance of 134 F/g at current density of 1 A/g with outstanding cyclic stability for 2000 cycles. The RGOMoO3 photocatalyst degrades 95% of MB dye within 90 min, and a considerable recyclability up to 4 cycles was observed. The quenching effect of scavengers test confirms holes are main reactive species in the photocatalytic degradation of MB. Further, the charge transfer process between RGO and MoO3 was schematically demonstrated.

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