Atomic Oxygen Oxidation
Atomic Oxygen Oxidation - Related Videos
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...
12:05
U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen
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Cited by 1 •
2019
This protocol presents the preparation of U2O5 thin films obtained in situ under ultra-high vacuum. The process involves oxidation and reduction of UO2 films with atomic oxygen and atomic hydrogen, respectively.
09:08
Detecting Reactive Oxygen Species
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2023
Reactive oxygen species are chemically active, oxygen-derived molecules capable of oxidizing other molecules. Because of their reactive nature, there are many deleterious effects associated with unchecked ROS production, including structural damage to DNA and other biological molecules. However, ROS can also be mediators of physiological signaling. There is accumulating evidence that ROS play significant roles in everything from activation of transcription factors to the mediation of...
02:59
The Atomic Theory of Matter
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2020
The earliest recorded discussion of the basic structure of matter comes from ancient Greek philosophers. Leucippus and Democritus argued that all matter was composed of small, finite particles that they called atomos, meaning “indivisible.” Later, Aristotle and others came to the conclusion that matter consisted of various combinations of the four “elements” — fire, earth, air, and water — and could be infinitely divided. Interestingly, these philosophers thought about atoms and “elements” as...
12:35
Atomically Traceable Nanostructure Fabrication
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Cited by 4 •
2015
We report a protocol for combining the atomic metrology of the Scanning Tunneling Microscope for surface patterning with selective Atomic Layer Deposition and Reactive Ion Etching. Using a robust process involving numerous atmospheric exposures and transport, 3D nanostructures with atomic metrology are fabricated.
FAQs
Product formation reflects the sequence after the first oxygen attack. Atomic oxygen may abstract hydrogen, add to a chemical bond, or promote bond cleavage; each route can generate reactive oxygen-containing intermediates that undergo further chemistry. The eventual accumulation of oxides, carbonyls, or other oxygenated compounds provides evidence of how the oxidation pathway progressed.
They connect the initial reaction with the stable products observed at the end. Because these intermediates can arise before oxides, carbonyls, or other oxygenated compounds form, they provide a mechanistic explanation for multistep oxidation rather than a single direct conversion. Considering them is especially useful when interpreting complex chemical changes in molecules or material surfaces.
Atomic oxygen oxidation is relevant in plasma, photochemical, combustion, and upper-atmosphere settings. These contexts make the process useful for connecting molecular oxidation with broader chemistry occurring under energetic or atmospheric conditions. The same mechanistic framework can support studies ranging from reaction behavior to material exposure and degradation.
A useful interpretation considers both the reactive event and the resulting chemical state. Researchers can compare the starting molecule or material with the oxygenated products, while asking whether hydrogen abstraction, bond addition, or cleavage best explains the change. This approach links observed oxides, carbonyls, or other oxygenated products to a plausible reaction sequence.
Surface oxidation can alter polymer and carbon surfaces by producing oxygenated chemical products and, in relevant studies, removing organic contaminants. These changes help researchers control surface chemistry for adhesion and catalysis while supporting advanced materials research. The approach is valuable when the desired outcome is a modified interface with different chemical behavior.
Low Earth orbit exposes materials to conditions where atomic oxygen oxidation can contribute to degradation. Studying that chemistry helps researchers understand how polymers, carbon-based materials, or other surfaces change when oxidized, and it supports evaluation of material durability. The same knowledge can guide surface modification strategies when controlled oxidation is useful rather than damaging.