Graphite oxide ≈ Graphite oxide
View article
Synthesis of Graphene Oxide using Modified Hummers Method: Solvent Influence Open
The aim of this study is to study the influence of different solvents on the structure and electrical properties of graphene oxide. GO was obtained from graphite flakes by using modified hummers method in which different from conventional …
View article
Synthesis of Graphene Oxide (GO) by Modified Hummers Method and Its Thermal Reduction to Obtain Reduced Graphene Oxide (rGO)* Open
Over the span of years, improvements over various synthesis methods of graphene are constantly pursued to provide safer and more effective alternatives. Though the extraction of graphene through Hummers method is one of the oldest techniqu…
View article
A Simple Approach to Stepwise Synthesis of Graphene Oxide Nanomaterial Open
Graphene oxide, like graphite oxide, is often described as an electrical insulator, due to the disruption of its sp 2 bonding networks.In actuality, this is not entirely true.The ability for graphene oxide
View article
Influence of graphene microstructures on electrochemical performance for supercapacitors Open
The influence of variant graphenes on electrochemical performance for supercapacitors was studied comparatively and systematically by using SEM, FTIR and Raman spectroscopy, cyclic voltammetry (CV), galvanostatic charge/discharge and elect…
View article
Graphene and its electrochemistry – an update Open
The electrochemistry of graphene and its derivatives has been extensively researched in recent years. This extends from the electrochemical preparation methods, the electrocatalytic properties of graphene doped with p-block or d-block elem…
View article
Graphene Oxide and Derivatives: The Place in Graphene Family Open
Graphene oxide (GO) is useful and promising material for graphene based applications in electronic, optics, chemistry, energy storage, and biology. At the beginning of graphene history GO was only a simple and cheap step for preparation of…
View article
Characterization of Graphite Oxide and Reduced Graphene Oxide Obtained from Different Graphite Precursors and Oxidized by Different Methods Using Raman Spectroscopy Open
In this paper, the influences of the graphite precursor and the oxidation method on the resulting reduced graphene oxide (especially its composition and morphology) are shown. Three types of graphite were used to prepare samples for analys…
View article
Synthesis and Applications of Graphene Oxide Open
Thanks to the unique properties of graphite oxides and graphene oxide (GO), this material has become one of the most promising materials that are widely studied. Graphene oxide is not only a precursor for the synthesis of thermally or chem…
View article
Reduced graphene oxide (rGO) based wideband optical sensor and the role of Temperature, Defect States and Quantum Efficiency Open
We report a facile and cost-effective approach to develop self-standing reduced Graphene Oxide (rGO) film based optical sensor and its low-temperature performance analysis where midgap defect states play a key role in tuning the crucial se…
View article
Synthesis of graphene materials by electrochemical exfoliation: Recent progress and future potential Open
Synthesis of structurally controlled graphene materials is critical for realizing their practical applications. The electrochemical exfoliation of graphite has emerged as a simple method to produce graphene materials. This review examines …
View article
Studies of Reduced Graphene Oxide and Graphite Oxide in the Aspect of Their Possible Application in Gas Sensors Open
The paper presents the results of investigations on resistance structures based on graphite oxide (GRO) and graphene oxide (rGO). The subject matter of the investigations was thaw the sensitivity of the tested structures was affected by hy…
View article
Synthesis and Characterization of Reduced Graphene Oxide (rGO) Started from Graphene Oxide (GO) Using the Tour Method with Different Parameters Open
A new approach to synthesize graphene is oxidizing graphite powder with a mixture of H 2 SO 4 /H 3 PO 4 acids and potassium permanganate. Parameters such as reaction time, reaction temperature, and amount of concentration were varied to st…
View article
FTIR, Raman and XRD analysis of graphene oxide films prepared by modified Hummers method Open
Graphene oxide (GO) is a promising material for energy storage device applications. Modified Hummers method (MHM) has been used to prepare GO films from graphite flakes by Sol-Gel method. With the aid of bridging agent dimethyldichlorosili…
View article
Water-enhanced oxidation of graphite to graphene oxide with controlled species of oxygenated groups Open
Water-enhanced oxidation of graphite via a modified Hummers method can produce graphene oxide with controlled species of oxygenated groups.
View article
Polyurethane Nanocomposites Containing Reduced Graphene Oxide, FTIR, Raman, and XRD Studies Open
Recently, graphene and other graphene-based materials have become an essential part of composite science and technology. Their unique properties are not only restricted to graphene but also shared with derivative compounds like graphene ox…
View article
Thermogravimetric Analysis (TGA) of Graphene Materials: Effect of Particle Size of Graphene, Graphene Oxide and Graphite on Thermal Parameters Open
Thermogravimetric analysis (TGA) has been recognized as a simple and reliable analytical tool for characterization of industrially manufactured graphene powders. Thermal properties of graphene are dependent on many parameters such as parti…
View article
Nanocrystalline SnS<sub>2</sub>coated onto reduced graphene oxide: demonstrating the feasibility of a non-graphitic anode with sulfide chemistry for potassium-ion batteries Open
An anode material incorporating a high capacity sulfide compound is reported for potassium-ion batteries.
View article
Green reduction of graphene oxide using alanine Open
There remains a real need for the easy, eco-friendly and scalable preparation method of graphene due to various potential applications. Chemical reduction is the most versatile method for the large scale production of graphene. Here we rep…
View article
Simple Synthesis of Large Graphene Oxide Sheets via Electrochemical Method Coupled with Oxidation Process Open
In this paper, we report a simple two-step approach for the synthesis of large graphene oxide (GO) sheets with lateral dimensions of ≈10 μm or greater. The first step is a pretreatment step involving electrochemical exfoliation of graphite…
View article
Facile synthesis of graphene from graphite using ascorbic acid as reducing agent Open
Graphene has attracted a tremendous attention in recent years due to its unique properties such as mechanical, thermal, optical and electrical properties. However, a large scale production of this material is still an issue and subjected t…
View article
Influence of Different Improved Hummers Method Modifications on the Characteristics of Graphite Oxide in Order to Make a More Easily Scalable Method Open
Different samples of graphite oxide (GrO) were prepared by modification of the Improved Hummers Method reported in the literature. Graphite was used as the raw material and KMnO4 and H2SO4 were used as chemical reagents. GrO samples were a…
View article
XRD-HTA, UV Visible, FTIR and SEM Interpretation of Reduced Graphene Oxide Synthesized from High Purity Vein Graphite Open
Attempts were made to synthesize high quality graphite oxide (GO) and reduced graphene oxide (rGO) by using successive oxidation-reduction process of high quality vein graphite from Sri Lanka. We report the lowest optimum reduction tempera…
View article
Chemical and structural properties of reduced graphene oxide—dependence on the reducing agent Open
Graphene oxide (GO) prepared from graphite powder using a modified Hummers method and reduced graphene oxide (rGO) obtained from GO using different reductants, i.e., sodium borohydride, hydrazine, formaldehyde, sodium hydroxide and L-ascor…
View article
Phosphorus and Nitrogen Dual Doped and Simultaneously Reduced Graphene Oxide with High Surface Area as Efficient Metal-Free Electrocatalyst for Oxygen Reduction Open
A P, N dual doped reduced graphene oxide (PN-rGO) catalyst with high surface area (376.20 m2·g−1), relatively high P-doping level (1.02 at. %) and a trace amount of N (0.35 at. %) was successfully prepared using a one-step method by direct…
View article
Mechanism of Oxidization of Graphite to Graphene Oxide by the Hummers Method Open
The mechanism of oxidizing reaction in the preparation of graphene oxide (GO) by a chemical oxidation method remains unclear. The main oxidant of graphite oxide has not been determined. Here, we show a new mechanism in which Mn2O7, the mai…
View article
Advances in Drug Delivery Nanosystems Using Graphene-Based Materials and Carbon Nanotubes Open
Carbon is one of the most abundant elements on Earth. In addition to the well-known crystallographic modifications such as graphite and diamond, other allotropic carbon modifications such as graphene-based nanomaterials and carbon nanotube…
View article
Graphene preparation and graphite exfoliation Open
The synthesis of Graphene is critical to achieving its functions in practical applications. Different methods have been used to synthesis graphene, but graphite exfoliation is considered the simplest way to produce graphene and graphene ox…
View article
An Update on Graphene Oxide: Applications and Toxicity Open
Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. These properties can be altered, as GO can be readily functionalize…
View article
A review of graphene oxide, graphene buckypaper, and polymer/graphene composites: Properties and fabrication techniques Open
In this critical review, the preparation methods, unique properties, and graphene oxide structure as well as graphene have been interpreted. Various aspects for the graphene oxide reactivity were also discussed. Graphene oxide, usually obt…
View article
Preparation of nitrogen and sulphur Co-doped reduced graphene oxide (rGO-NS) using N and S heteroatom of thiourea Open
Graphene oxide (GO) has been synthesized via modified Hummer's method with graphite powder as a starting material. The synthesized reduced graphene oxide (rGO) was prepared by GO as a precursor. Synthesis of rGO-NS was performed by hydroth…