Cobalt oxide nanoparticle-decorated reduced graphene oxide (Co3O4–rGO): active and sustainable nanoelectrodes for water oxidation reaction

2020 ◽  
Vol 44 (36) ◽  
pp. 15776-15784
Author(s):  
Ajay V. Munde ◽  
Balaji B. Mulik ◽  
Raviraj P. Dighole ◽  
Bhaskar R. Sathe
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cobalt Oxide ◽  
Water Oxidation ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Oxidation Reactions ◽  
Chemical Reduction Method ◽  
Reduced Graphene ◽  
Oxide Nanoparticle

Herein, cobalt oxide (Co3O4)-decorated reduced graphene oxide (rGO)-based nanoelectrodes were fabricated by the chemical reduction method for electrocatalytic water oxidation reactions.

scholarly journals Preparation of silver/reduced graphene oxide coated polyester fabric for electromagnetic interference shielding

RSC Advances ◽  
2017 ◽  
Vol 7 (64) ◽  
pp. 40452-40461 ◽  
Author(s):  
Can Wang ◽  
Cheng Xiang ◽  
Lin Tan ◽  
Jianwu Lan ◽  
Linghui Peng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Microwave Irradiation ◽  
Reduced Graphene Oxide ◽  
Electromagnetic Interference ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Polyester Fabric ◽  
Electromagnetic Interference Shielding ◽  
Chemical Reduction Method ◽  
Reduced Graphene

In this study, silver/reduced graphene oxide (Ag/RGO) coated polyester (PET) fabrics with dopamine as adhesive agent were prepared through an efficient chemical reduction method under microwave irradiation.

Boron-doped reduced graphene oxide-based bimetallic Ni/Fe nanohybrids for the rapid dechlorination of trichloroethylene

2017 ◽  
Vol 4 (3) ◽  
pp. 565-576 ◽  
Author(s):  
Rama Shanker Sahu ◽  
Kartick Bindumadhavan ◽  
Ruey-an Doong
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Ni Nanoparticles ◽  
Chemical Reduction Method ◽  
Boron Doped ◽  
Reduced Graphene ◽  
Simple Chemical

In this study, a simple chemical reduction method for the synthesis of novel and efficient graphene-based bimetallic Fe/Ni nanoparticles was developed for the rapid and effective dechlorination of trichloroethylene (TCE).

scholarly journals Obtaining of Reduced Graphene Oxide from Graphite by using Hummer’s and Chemical Reduction Method

2019 ◽  
Vol 2 (3) ◽  
pp. 601-605
Author(s):  
Kübra Yıldız ◽  
Muhammet Uzun
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Reduction Method ◽  
Chemical Reduction ◽  
Graphite Powder ◽  
Chemical Reduction Method ◽  
Graphene Oxides ◽  
Hummers Method ◽  
Reduced Graphene ◽  
Modified Hummers Method

In this study, graphene oxide (GO) was synthesized from graphite using modified Hummers method. According to other methods known in the literature, modified Hummers method; it is simpler and less costly in terms of process steps. In addition, it is safer and environmentally friendly than the Hummers method. Reduced Graphene Oxide (RGO) was obtained by reduction of graphene oxides (GO) synthesized by modified Hummers method. It is understood from the obtained results that GO is synthesized successfully from graphite powder by modified Hummers method and RGO is obtained successfully by reduction of graphene oxides (GO).

scholarly journals Inserting AgCl@rGO into graphene hydrogel 3D structure: synergy of adsorption and photocatalysis for efficient removal of bisphenol A

RSC Advances ◽  
2017 ◽  
Vol 7 (63) ◽  
pp. 39814-39823 ◽  
Author(s):  
Fangyuan Chen ◽  
Junxiu Zhao ◽  
Weijia An ◽  
Jinshan Hu ◽  
Yinghua Liang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Bisphenol A ◽  
Reduction Method ◽  
Chemical Reduction ◽  
3D Structure ◽  
Core Shell ◽  
Chemical Reduction Method ◽  
Efficient Removal ◽  
Reduced Graphene ◽  
Core Shell Structure

An AgCl@graphene (rGO) core–shell structure was fabricated and then loaded into reduced graphene oxide hydrogel (rGH) to form AgCl@rGO-rGH by the chemical reduction method.

Synthesis and characterization of reduced graphene oxide by cobalt oxide composite electrode

2020 ◽  
Author(s):  
S. Veeresh ◽  
H. Ganesh ◽  
Y. S. Nagaraj ◽  
M. Vandana ◽  
S. P. Ashokkumar ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Cobalt Oxide ◽  
Composite Electrode ◽  
Synthesis And Characterization ◽  
Oxide Composite ◽  
Reduced Graphene

New Water Oxidation Electrocatalyst Based on the Cobalt-Containing Polyoxometalate-Reduced Graphene Oxide Hybrid Nanomaterial

Langmuir ◽  
2021 ◽  
Vol 37 (5) ◽  
pp. 1925-1931
Author(s):  
Samaneh Shahsavarifar ◽  
Majid Masteri-Farahani ◽  
Mohammad Reza Ganjali
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Oxidation ◽  
Hybrid Nanomaterial ◽  
Reduced Graphene

scholarly journals A Facile and Green Synthesis of a MoO2-Reduced Graphene Oxide Aerogel for Energy Storage Devices

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 594 ◽  
Author(s):  
Mara Serrapede ◽  
Marco Fontana ◽  
Arnaud Gigot ◽  
Marco Armandi ◽  
Glenda Biasotto ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Electrochemical Impedance ◽  
Chemical Reduction ◽  
Low Cost ◽  
Xps Analysis ◽  
3D Scaffold ◽  
Energy Storage Devices ◽  
Reduced Graphene

A simple, low cost, and “green” method of hydrothermal synthesis, based on the addition of l-ascorbic acid (l-AA) as a reducing agent, is presented in order to obtain reduced graphene oxide (rGO) and hybrid rGO-MoO2 aerogels for the fabrication of supercapacitors. The resulting high degree of chemical reduction of graphene oxide (GO), confirmed by X-Ray Photoelectron Spectroscopy (XPS) analysis, is shown to produce a better electrical double layer (EDL) capacitance, as shown by cyclic voltammetric (CV) measurements. Moreover, a good reduction yield of the carbonaceous 3D-scaffold seems to be achievable even when the precursor of molybdenum oxide is added to the pristine slurry in order to get the hybrid rGO-MoO2 compound. The pseudocapacitance contribution from the resulting embedded MoO2 microstructures, was then studied by means of CV and electrochemical impedance spectroscopy (EIS). The oxidation state of the molybdenum in the MoO2 particles embedded in the rGO aerogel was deeply studied by means of XPS analysis and valuable information on the electrochemical behavior, according to the involved redox reactions, was obtained. Finally, the increased stability of the aerogels prepared with l-AA, after charge-discharge cycling, was demonstrated and confirmed by means of Field Emission Scanning Electron Microscopy (FESEM) characterization.

Chemically reduced graphene oxide-coated knitted fabric imparted conductivity and outstanding hydrophobicity

2021 ◽  
pp. 004051752199547
Author(s):  
Min Hou ◽  
Xinghua Hong ◽  
Yanjun Tang ◽  
Zimin Jin ◽  
Chengyan Zhu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Chemical Reduction ◽  
Knitted Fabric ◽  
Mesh Structure ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Modified Hummers Method

Functionalized knitted fabric, as a kind of flexible, wearable, and waterproof material capable of conductivity, sensitivity and outstanding hydrophobicity, is valuable for multi-field applications. Herein, the reduced graphene oxide (RGO)-coated knitted fabric (polyester/spandex blended) is prepared, which involves the use of graphite oxide (GO) by modified Hummers method and in-situ chemical reduction with hydrazine hydrate. The treated fabric exhibits a high electrical conductivity (202.09 S/cm) and an outstanding hydrophobicity (140°). The outstanding hydrophobicity is associated with the morphology of the fabric and fiber with reference to pseudo-infiltration. These properties can withstand repeated bending and washing without serious deterioration, maintaining good electrical conductivity (35.70 S/cm) and contact angle (119.39°) after eight standard washing cycles. The material, which has RGO architecture and continuous loop mesh structure, can find wide use in smart garment applications.

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