Graphite Oxide Powder
Graphite Oxide Powder - Related Videos
14:20
Absolute Quantum Yield Measurement of Powder Samples
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Cited by 16 •
2012
In this video we will demonstrate measuring and calculating absolute quantum yield and chromaticity coordinates directly in powder samples using the Hitachi F-7000 Quantum Yield Measuring System.
08:14
Single Crystal and Powder X-ray Diffraction
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2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University X-ray crystallography is a technique that uses X-rays to study the structure of molecules. X-ray diffraction (XRD) experiments are routinely carried out with either single-crystal or powdered samples. Single-crystal XRD: Single-crystal XRD allows for absolute structure determination. With single-crystal XRD data, the exact atomic positions can be observed, and thus bond lengths and angles can be determined. This...
09:11
Porosimetry of a Silica Alumina Powder
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Surface area and pore size distribution are attributes used by adsorbent and catalyst manufacturers and users to ensure quality control and to determine when products are at the end of their useful lives. The surface area of a porous solid is directly related to its adsorption capacity or catalytic activity. The pore size distribution of an adsorbent or catalyst is...
03:14
Oxidation Numbers
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2020
In redox reactions, the transfer of electrons occurs between reacting species. Electron transfer is described by a hypothetical number called the oxidation number (or oxidation state). It represents the effective charge of an atom or element, which is assigned using a set of rules. Oxidation Number (Oxidation State) In the case of an ionic compound, oxidation numbers are assigned based on the number of electrons transferred between reacting species. For example, in the formation of calcium...
09:15
Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors
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Cited by 5 •
2016
The study demonstrates the growth of iridium oxide-reduced graphene oxide (IrO2-RGO) nanohybrid thin films on irregular and rough screen-printed carbon substrate through a green electrochemical synthesis, and their implementation as a pH sensor with a patterned paper-fluidic platform.
FAQs
Chemical oxidation adds oxygen-containing functional groups both between and across the carbon layers. These groups alter the local chemical environment while increasing polarity and surface reactivity and separating neighboring layers. Consequently, the powder becomes more chemically adaptable and more readily processed in dispersions than unmodified graphite.
Increased spacing creates more room between adjacent carbon layers and changes how solvents and other materials interact with the structure. This expansion supports exfoliation, which is important when converting the layered precursor into graphene oxide. It also helps explain why the material can contribute to membranes, coatings, and other systems involving interlayer transport or surface contact.
The oxygen-containing groups make the material more polar, allowing graphite oxide to disperse in water or other solvents more readily than less polar graphite. They also increase surface reactivity, enabling researchers to modify the material through functionalization. These combined features improve processing and provide chemical control when designing interfaces in nanomaterial systems.
Surface functionalization allows researchers to adjust how the material interacts with its surroundings rather than relying on one fixed chemical behavior. By controlling the surface chemistry, they can influence mechanical, electrical, and transport properties. This tunability helps adapt graphite oxide-based components to different design goals in polymer composites, coatings, membranes, and electrochemical materials.
Researchers exfoliate the layered powder, separating its oxidized sheets into a dispersed form. The oxygen-containing chemistry supports this transition by increasing polarity and solvent dispersibility. Exfoliation is therefore a key processing step when the objective is to obtain graphene oxide for subsequent material development, rather than use the powder only as a bulk layered precursor.
The material supports several application areas, including polymer composites, coatings, membranes, adsorbents, and electrochemical materials. Its polarity helps with dispersion and compatibility in solvent-based or composite systems, while its reactive surfaces support further chemical modification. These complementary characteristics allow the same carbon-based platform to serve different functions across materials science and energy research.
Researchers can use the material’s adjustable chemistry to influence mechanical, electrical, and transport behavior. Changes in surface functionalization affect how the oxidized layers interact with polymers, solvents, or neighboring components. This property control is especially relevant when designing membranes, composites, coatings, or electrochemical materials that require a particular balance of structural and functional performance.