Definition of reduce Graphene Oxide?
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Reduced Graphene Oxide (rGO) is a material obtained through the reduction of Graphene Oxide (GO), which is typically produced from graphite oxidation processes. Various methods, such as chemical exfoliation and controlled reduction, are employed to reduce GO to rGO. rGO exhibits attractive properties for optoelectronic applications, with potential for mass production at a lower cost. One method involves suspending GO in a liquid medium with iodide, partially reducing it, and further reducing it through UV irradiation to obtain rGO. The preparation method for rGO involves simultaneous reduction and activation processes, increasing the interlayer distance and specific surface area compared to conventional methods. Overall, rGO offers tunable properties, high transparency, and conductivity, making it a promising material for various applications.
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| Reduced Graphene Oxide (rGO) is a carbon material produced by reducing Graphene Oxide, characterized by decreased crystal size and identified functional groups, impacting conductivity and capacitance. | |
| Reduced Graphene Oxide (rGO) is produced by chemically reducing Graphene Oxide (GO), altering the C/O ratio, through various controlled methodologies discussed in the paper. | |
| Reduced Graphene Oxide (rGO) is produced from Graphene Oxide (GO) through a two-step reduction process, offering tunable work function and potential for optoelectronic applications. | |
| Reducing graphene oxide involves using iodide to partially reduce GO, forming partially reduced GO (prGO), then further reducing it with UV radiation to obtain a reduced form of graphene oxide. |
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What is the graphene oxide?5 answersGraphene oxide (GO) is a two-dimensional material formed from oxidized graphite, with oxygen functional groups decorating the carbon plane. It can be obtained by exfoliating graphite oxide into layered sheets. GO has excellent electrical, mechanical, and thermal properties, making it suitable for various applications such as polymer composites, energy conversion, sensors, and photonic applications. GO is a single monomolecular layer of graphite containing epoxide, carbonyl, carboxyl, and hydroxyl groups. It can be made semi-metallic, insulating, or semiconductive while maintaining optical transparency. Various characterization techniques, including transmission electron microscopy, X-ray diffraction analysis, and X-ray photoelectron spectroscopy, are used to study GO. GO has a large surface area and high thermal and electrical conductivity, making it versatile for applications in electronics, catalysis, sensors, and energy conversion and storage. GO is a two-dimensional carbon-based nanomaterial with unique mechanical, electric, and thermal properties. It is widely used in different industries, but its extensive applications can release graphene oxide into the environment. GO is a single-atomic layered material obtained from graphite, and its hydrophilic nature allows it to disperse in various solvents. However, the oxygen functionalities in GO can degrade its properties, limiting its application in electrically active materials and devices. GO has potential applications in energy storage devices, sensors, biomedical applications, solar cells, and supercapacitors.
Sonifaction reduce oxygen graphene oxide?5 answersSonication and/or water rinsing processes were found to reduce the density of weakly bonded oxygen debris on the surface of graphene oxide (GO). These treatments removed epoxy and hydroxyl oxygen groups weakly attached to the graphene matrix, while the double C=O bonds were almost unaffected. The non-uniform distribution of oxidation sites on GO appeared as clusters concentrated on defected regions, separated by pristine graphene areas. The electrochemical reduction of GO resulted in partially reduced graphene oxide (ErGO), which displayed enhanced catalytic activity towards the oxygen reduction reaction (ORR) in alkaline solutions. The presence of quinone functional groups in ErGO favored the 2e(-) ORR pathway. A nanocomposite of reduced graphene oxide/iron oxide (rGO/Fe3O4) showed improved performance as an electrocatalyst for ORR compared to bare graphene. The nanocomposite exhibited stable electron transfers and lower charge transfer resistance due to the synergistic effect between rGO and Fe3O4.
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