Generation mechanism of hydroxyl radical species and its …
网页2015年3月20日 · Further, to predict the mechanism of conversion of hydroxide ion (OH −) to OH • or H 2 O 2 (hydrogen peroxide) and electron, we determined the current inside the solution of different pH....
Understanding Hydroxyl Radical (•OH) Generation Processes in ...
网页2016年7月7日 · OH radicals formed from H2O2 (at 0.0-1.3 V vs. a ref. H electrode) and O2 (at 0.0 V) on the Pt/C catalyst electrodes for polymer electrolyte fuel cells (PEFCs) were successfully detected by ESR spectroscopy after improvement of the detection system to prevent the decompn. of 5,5-dimethyl-1-pyrroline N-oxide spin-trapping reagent.
redox - Half equations for H2O2 for its reducing and oxidising …
网页2014年5月1日 · Is there a complete list of all the half equations for $\ce{H2O2}$ - both oxidation and reduction, in acidic and alkaline conditions? I've looked on the internet but can't seem to find a list with all of them. These are my first attempts: $\ce{H2O2 + 2e^- -> 2OH^-}$ (in alkaline conditions) $\ce{H2O2 + 2H^+ + 2e^- -> 2H2O}$ (in acidic conditions)
Hydrogen peroxide - Wikipedia
网页Hydrogen peroxide is a chemical compound with the formula H 2 O 2. In its pure form, it is a very pale blue [5] liquid that is slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic, usually as a dilute solution (3%–6% by weight) in water for consumer use and in higher concentrations for industrial use.
Efficient H2O2 generation and spontaneous OH conversion for in …
网页2020年10月5日 · H 2 O 2 is a green and valuable chemical that can be electrochemically synthesis from oxygen reduction, offering in-situ application for organic pollutants removal in environmental remediation. However, how to improve activity and further convert into powerful radicals is a still challenge.
Overlooked Formation of H2O2 during the Hydroxyl Radical …
网页2022年3月1日 · Through careful investigation, we revealed an overlooked reaction pathway during H 2 O 2 and •OH transformations. Varying oxygen concentrations, pHs, alcohol dosages, and types altered H 2 O 2 formation, which can affect •OH determination accuracy. Among alcohols, n-butanol is the best scavenger because it quenches •OH rapidly but re ...
Generation of hydroxyl radicals from reactions between a ...
网页2018年7月17日 · The hydroxyl radical (·OH) is a powerful oxidant that is produced in a wide range of environments via the Fenton reaction (Fe 2+ + H 2 O 2 → Fe 3+ + ·OH + OH -). The reactants are formed from the...
One- or Two-Electron Water Oxidation, Hydroxyl Radical, or H2O2 …
网页2017年2月23日 · Electrochemical or photoelectrochemcial oxidation of water to form hydrogen peroxide (H2O2) or hydroxyl radicals (•OH) offers a very attractive route to water disinfection, and the first process co...
Generation and Release of OH Radicals from the Reaction of H2O …
网页2022年3月11日 · We show that water and O 2 react on carbonaceous surfaces and give rise to gaseous OH radicals under irradiation. With ample delocalized π electrons, carbonaceous surfaces enable the easy desorption of hydroxyl groups to produce gaseous OH radicals, evidenced by direct observation of the steady generation of …
Hydroxyl radicals in natural waters: Light/dark mechanisms, …
网页2023年4月10日 · Hydroxyl radicals (•OH) are the most powerful reactive and typical free radicals in reactive oxygen species (ROS). Generation of •OH via reactions of hydrogen peroxide (H 2 O 2) and ferrous ions (Fe 2+) were first discovered in 1934 by Haber and Weiss, and are known today as the Fenton reaction.
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