Synthesis of a highly conductive and large surface area graphene oxide hydrogel and its use in a supercapacitor

2013 ◽  
Vol 1 (2) ◽  
pp. 208-211 ◽  
Author(s):  
Van Hoang Luan ◽  
Huynh Ngoc Tien ◽  
Le Thuy Hoa ◽  
Nguyen Thi Minh Hien ◽  
Eun-Suok Oh ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Area ◽  
Large Surface Area

scholarly journals Dendron conjugation to graphene oxide using click chemistry for efficient gene delivery

RSC Advances ◽  
2015 ◽  
Vol 5 (62) ◽  
pp. 50196-50211 ◽  
Author(s):  
Kishor Sarkar ◽  
Giridhar Madras ◽  
Kaushik Chatterjee
Keyword(s):  
Graphene Oxide ◽  
Gene Delivery ◽  
Click Chemistry ◽  
Surface Area ◽  
Cellular Uptake ◽  
Large Surface Area ◽  
Efficient Gene ◽  
Attractive Candidate

Owing to its large surface area and rapid cellular uptake, graphene oxide (GO) is emerging as an attractive candidate material for delivery of drugs and genes.

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.

Graphene oxide-based polyethersulfone core–shell particles for dye uptake

RSC Advances ◽  
2016 ◽  
Vol 6 (104) ◽  
pp. 102389-102397 ◽  
Author(s):  
Jukai Zhou ◽  
Shengqiu Chen ◽  
Sheng Xu ◽  
Xiang Zhang ◽  
Weifeng Zhao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Surface Area ◽  
Electric Charge ◽  
Large Surface Area ◽  
Core Shell ◽  
Dye Uptake ◽  
Water Contaminants ◽  
Application Potential ◽  
Shell Particles

Graphene oxide (GO), a graphene nanomaterial with great application potential, possesses promising adsorption abilities towards various water contaminants due to the ultra-large surface area and the nature of electric charge on the surface.

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.

Functional Two-Dimensional Black Phosphorus Nanostructures towards Next-Generation Devices

2021 ◽  
Author(s):  
Mengke Wang ◽  
Jun Zhu ◽  
You Zi ◽  
Zheng-Guang Wu ◽  
Haiguo Hu ◽  
...  
Keyword(s):  
Surface Area ◽  
Biomedical Applications ◽  
Black Phosphorus ◽  
Large Surface Area ◽  
Two Dimensional ◽  
Next Generation

In recent years, two-dimensional (2D) black phosphorus (BP) has been widely applied in many fields, such as (opto)electronics, transistors, catalysis and biomedical applications due to its large surface area, tunable...

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.

Research on metallic chalcogen-functionalized monolayer-puckered V2CX2 (X = S, Se, and Te) as promising Li-ion battery anode materials

2021 ◽  
Author(s):  
Chunmei Tang ◽  
Xiaoxu Wang ◽  
Shengli Zhang
Keyword(s):  
Surface Area ◽  
Anode Materials ◽  
Large Surface Area ◽  
Two Dimensional ◽  
Li Ion Batteries ◽  
Li Ion Battery ◽  
Li Ion ◽  
Battery Anode

Two-dimensional MXene nanomaterials are promising anode materials for Li-ion batteries (LIBs) due to their excellent conductivity, large surface area, and high Li capability.

scholarly journals Tuning the hierarchical pore structure of graphene oxide through dual thermal activation for high-performance supercapacitor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jeongpil Kim ◽  
Jeong-Hyun Eum ◽  
Junhyeok Kang ◽  
Ohchan Kwon ◽  
Hansung Kim ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Pore Structure ◽  
Specific Capacitance ◽  
Surface Area ◽  
Thermal Annealing ◽  
High Performance ◽  
Annealing Process ◽  
Supercapacitor Electrode ◽  
Simple Method ◽  
Surface Areas

AbstractHerein, we introduce a simple method to prepare hierarchical graphene with a tunable pore structure by activating graphene oxide (GO) with a two-step thermal annealing process. First, GO was treated at 600 °C by rapid thermal annealing in air, followed by subsequent thermal annealing in N2. The prepared graphene powder comprised abundant slit nanopores and micropores, showing a large specific surface area of 653.2 m2/g with a microporous surface area of 367.2 m2/g under optimized conditions. The pore structure was easily tunable by controlling the oxidation degree of GO and by the second annealing process. When the graphene powder was used as the supercapacitor electrode, a specific capacitance of 372.1 F/g was achieved at 0.5 A/g in 1 M H2SO4 electrolyte, which is a significantly enhanced value compared to that obtained using activated carbon and commercial reduced GO. The performance of the supercapacitor was highly stable, showing 103.8% retention of specific capacitance after 10,000 cycles at 10 A/g. The influence of pore structure on the supercapacitor performance was systematically investigated by varying the ratio of micro- and external surface areas of graphene.

Sign in / Sign up

Export Citation Format

Share Document