Articles with "high valent" as a keyword



Asymmetric Electron Transport‐Induced Formation of High‐Valent IrOx in NiFeOOH Heterostructure for Efficient Water Oxidation

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Published in 2025 at "Advanced Functional Materials"

DOI: 10.1002/adfm.202503692

Abstract: Metal oxyhydroxides (MOOHs) as the active phase of transition metal‐oxide (TMOs) electrodes in the oxygen evolution reaction (OER) are limited by unsatisfactory electrochemical activity and stability during high‐current conditions. Herein, the heterostructure of high‐valent IrOx… read more here.

Keywords: asymmetric electron; high valent; valent; heterostructure ... See more keywords

Electrochemical Synthesis of High-Valent Metal Oxides via In Situ Oxidant Generation with Real-Time Phase and Composition Control.

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Published in 2025 at "Advanced science"

DOI: 10.1002/advs.202514162

Abstract: Unlike conventional electrosynthesis, which primarily targets homogeneous reactions, this study introduces a scalable electrochemical strategy for synthesizing high‐valent metal oxide powders with controlled crystalline phases. Reactive oxidants are generated in situ and modulated by applied… read more here.

Keywords: composition; control; high valent; metal ... See more keywords

Local Charge Modulation Induced the Formation of High‐Valent Nickel Sites for Enhanced Urea Electrolysis

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Published in 2024 at "Advanced Energy Materials"

DOI: 10.1002/aenm.202403004

Abstract: Ni‐based electrocatalysts are considered to be significantly promising candidates for electrocatalytic urea oxidation reaction (UOR). However, their UOR activity and stability are severely enslaved by the inevitable Ni group self‐oxidation phenomenon. In this study, the… read more here.

Keywords: high valent; valent; nife ldh; local charge ... See more keywords

C—H Bond Activation Mechanism by a High‐Valent Dinuclear Copper Complex: Unraveling the Effect of a Base by a Theoretical Study

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Published in 2025 at "Journal of Computational Chemistry"

DOI: 10.1002/jcc.70070

Abstract: Recently, an electrochemically monooxidized dinuclear copper(II) complex [Cu2(L)(μ‐OH)2]2+ with the dipyridylethane naphthyridine ligand (L) has been shown to activate the recalcitrant aliphatic Csp3H bond of toluene (bond dissociation free energy, BDFE = 87.0 kcal mol−1) at room temperature. The… read more here.

Keywords: copper complex; high valent; dinuclear copper; base ... See more keywords

High-Valent Iron-Oxo Complexes as Dominant Species to Eliminate Pharmaceuticals and Chloride-Containing Intermediates by the Activation of Peroxymonosulfate Under Visible Irradiation

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Published in 2019 at "Catalysis Letters"

DOI: 10.1007/s10562-019-03047-4

Abstract: Abstract Generally, the sulfate (SO 4 · − ) and hydroxyl (HO · ) radicals are the dominant active species in most catalytic oxidation processes with peroxymonosulfate (PMS). However, the existence of various natural organic… read more here.

Keywords: iron; valent iron; high valent; iron oxo ... See more keywords

Synthesis, characterization, and reactivities of high valent metal–corrole (M = Cr, Mn, and Fe) complexes

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Published in 2019 at "Coordination Chemistry Reviews"

DOI: 10.1016/j.ccr.2019.213043

Abstract: Abstract For the first-row middle transition metals (Cr, Mn, and Fe), the formal oxidation states are relatively lower. However, biological systems in various enzymatic reactions rely extensively on the higher oxidation states of these first-row… read more here.

Keywords: oxidation; higher oxidation; metal; high valent ... See more keywords

Visible-light-assisted generation of high-valent iron-oxo species anchored axially on g-C3N4 for efficient degradation of organic pollutants

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Published in 2017 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2017.07.110

Abstract: Abstract As highly active species, in theory, hydroxyl radicals ( OH) can move freely and destroy almost all organic compounds, including catalysts with a conjugate structure. Therefore, a system that can generate oxidative species with… read more here.

Keywords: light assisted; visible light; generation; high valent ... See more keywords
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Nonradical activation of peroxymonosulfate by hematite for oxidation of organic compounds: A novel mechanism involving high-valent iron species

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Published in 2021 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2021.130743

Abstract: Abstract Peroxymonosulfate (PMS) activated by Hematite (α-Fe2O3) was capable of degrading different organic compounds. Several lines of experimental evidence are presented which argue against the generation of radical species as well as singlet oxygen (1O2).… read more here.

Keywords: oxidation organic; spectroscopy; iron species; organic compounds ... See more keywords

Peroxymonosulfate activation by cobalt(II) for degradation of organic contaminants via high-valent cobalt-oxo and radical species.

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Published in 2021 at "Journal of hazardous materials"

DOI: 10.1016/j.jhazmat.2021.125679

Abstract: The reaction between Co(II) and PMS is an appealing advanced oxidation process (AOP), where multiple reactive oxidizing species (ROS) including high-valent cobalt-oxo [Co(IV)], sulfate radical (SO4•-), and hydroxy radical (•OH) are intertwined together for degrading… read more here.

Keywords: degradation; cobalt; cobalt oxo; organic contaminants ... See more keywords
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Visible light generation of high-valent metal-oxo intermediates and mechanistic insights into catalytic oxidations.

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Published in 2020 at "Journal of inorganic biochemistry"

DOI: 10.1016/j.jinorgbio.2020.111246

Abstract: High-valent metal-oxo complexes play central roles as active oxygen atom transfer (OAT) agents in many enzymatic and synthetic oxidation catalysis. This review focuses on our recent advances in application of photochemical approaches to probe the… read more here.

Keywords: oxo species; oxo; valent metal; high valent ... See more keywords

Enhanced Oxidation of Organic Contaminants by Iron(II)-Activated Periodate: The Significance of High-Valent Iron-Oxo Species.

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Published in 2021 at "Environmental science & technology"

DOI: 10.1021/acs.est.1c00375

Abstract: Potassium periodate (PI, KIO4) was readily activated by Fe(II) under acidic conditions, resulting in the enhanced abatement of organic contaminants in 2 min, with the decay ratios of the selected pollutants even outnumbered those in… read more here.

Keywords: oxo species; organic contaminants; high valent; iron oxo ... See more keywords