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Supercritical Water Oxidation of Sulfide
Environmental Science & Technology, 2003Supercritical water oxidation (SCWO) of sulfide wastewater with oxygen as the oxidant was investigated using ammonium sulfide solution as the model waste. The experiments, which were conducted in a bench-scale continuous SCWO installation, indicated that S2- could be completely oxidized to SO4(2-) within the residence time of less than 10 s under the ...
Tao, Wang +3 more
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Chloride-assisted catalytic water oxidation
Chemical Communications, 2014Rates of electrocatalytic water oxidation to oxygen by Ru(II) polypyridyl complexes are enhanced by added NaCl. Observations based on the single-site catalyst [Ru(II)(Mebimpy)(bpy)(OH2)](2+) (Mebimpy is 2,6-bis(1-methylbenzimidazol-2-yl)pyridine; bpy is 2,2'-bipyridine) at pH 7.0 in a phosphate buffer suggest a mechanism involving initial oxidation of ...
Zuofeng, Chen +3 more
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Mono‐/Multinuclear Water Oxidation Catalysts
ChemSusChem, 2019AbstractWater splitting, in which water molecules can be transformed into hydrogen and oxygen, is an appealing energy conversion and transformation strategy to address the environmental and energy crisis. The oxygen evolution reaction (OER) is dynamically slow, which limits energy conversion efficiency during the water‐splitting process and requires ...
Qiaoqiao Zhang, Jingqi Guan
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Photocatalytic Water Oxidation
2015Depletion in the resources of fossil fuels and its hazardous effects on environment are the biggest concerns of this century. Researchers have suggested solar energy as a sustainable and viable solution to overcome this problem. But due to the sporadic nature of solar energy, it is essential to store it.
Tanvi Gadgil +2 more
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A Water‐Soluble Highly Oxidizing Cobalt Molecular Catalyst Designed for Bioinspired Water Oxidation
Angewandte Chemie, 2022AbstractHerein, we present a stable water‐soluble cobalt complex supported by a dianionic 2,2′‐([2,2′‐bipyridine]‐6,6′‐diyl)bis(propan‐2‐ol) ligand scaffold, which is a rare example of a high‐oxidation species, as demonstrated by structural, spectroscopic and theoretical data.
Yun‐Fei Su +10 more
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International Journal of Hydrogen Energy, 2016
Abstract Synthesis and characterization of Mn oxides on the surface of nanoparticles such as KAl3(SO4)2(OH)6, Co3O4, CuO, Fe3O4, MgO, NiO, SiO2, SnO2, TiO2, WO3, zeolite, ZnO, and ZrO2 have been reported previously. Herein, we reported the effect of support on the water-oxidizing activity of amorphous Mn oxides in the presence of cerium(IV) ammonium ...
Mohammad Mahdi Najafpour +3 more
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Abstract Synthesis and characterization of Mn oxides on the surface of nanoparticles such as KAl3(SO4)2(OH)6, Co3O4, CuO, Fe3O4, MgO, NiO, SiO2, SnO2, TiO2, WO3, zeolite, ZnO, and ZrO2 have been reported previously. Herein, we reported the effect of support on the water-oxidizing activity of amorphous Mn oxides in the presence of cerium(IV) ammonium ...
Mohammad Mahdi Najafpour +3 more
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Biomimetic Water-Oxidation Catalysts: Manganese Oxides
2015The catalytic oxidation of water to molecular oxygen is a key process for the production of solar fuels. Inspired by the biological manganese-based active site for this reaction in the enzyme Photosystem II, researchers have made impressive progress in the last decades regarding the development of synthetic manganese catalysts for water oxidation.
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Modeling DNA oxidation in water
Physical Chemistry Chemical Physics, 2017We report a novel set of hole energies and electronic coupling parameters that reproduce quantitatively experimental oxidation free energies of DNA.
CAPOBIANCO, AMEDEO +2 more
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Water Interaction with Iron Oxides
Angewandte Chemie International Edition, 2015AbstractWe present a mechanistic study on the interaction of water with a well‐defined model Fe3O4(111) surface that was investigated by a combination of direct calorimetric measurements of adsorption energies, infrared vibrational spectroscopy, and calculations bases on density functional theory (DFT).
Dementyev, P. +9 more
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Fast Water Oxidation Using Iron
Journal of the American Chemical Society, 2010Photolysis of water, a long-studied strategy for storing solar energy, involves two half-reactions: the reduction of protons to dihydrogen and the oxidation of water to dioxygen. Proton reduction is well-understood, with catalysts achieving quantum yields of 34% when driven by visible light.
W Chadwick, Ellis +3 more
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