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Exploring the Mechanism of Peroxodisulfate Activation with Silver Metavanadate to Generate Abundant Reactive Oxygen Species

Exploring the Mechanism of Peroxodisulfate Activation with Silver Metavanadate to Generate... Reactive oxygen species (ROS) containing sulfate and hydroxyl radicals can act as Fenton type reagents to remove organic contaminants from water. Here, a catalytic system silver metavanadate is reported for the activation of peroxodisulfate in an aqueous medium to generate ROS, which is further utilized for the efficient degradation of the water‐soluble pollutants such as phenols, pesticides, antibiotics, and organic dyes. Remarkably, complete carbon mineralization of the water‐soluble contaminants is achieved to form carbon dioxide as the major product. In‐situ electron paramagnetic resonance (EPR) studies combined with ex‐situ methods reveal that a massive amount of hydroxyl radicals (•OH) are formed through sulfate radical anions (SO4•−) and act as the ROS for the organic pollutant degradation. In addition, the stability of the catalyst is monitored by various characterization techniques. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advanced Sustainable Systems Wiley

Exploring the Mechanism of Peroxodisulfate Activation with Silver Metavanadate to Generate Abundant Reactive Oxygen Species

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References (67)

Publisher
Wiley
Copyright
© 2021 Wiley‐VCH GmbH
eISSN
2366-7486
DOI
10.1002/adsu.202000288
Publisher site
See Article on Publisher Site

Abstract

Reactive oxygen species (ROS) containing sulfate and hydroxyl radicals can act as Fenton type reagents to remove organic contaminants from water. Here, a catalytic system silver metavanadate is reported for the activation of peroxodisulfate in an aqueous medium to generate ROS, which is further utilized for the efficient degradation of the water‐soluble pollutants such as phenols, pesticides, antibiotics, and organic dyes. Remarkably, complete carbon mineralization of the water‐soluble contaminants is achieved to form carbon dioxide as the major product. In‐situ electron paramagnetic resonance (EPR) studies combined with ex‐situ methods reveal that a massive amount of hydroxyl radicals (•OH) are formed through sulfate radical anions (SO4•−) and act as the ROS for the organic pollutant degradation. In addition, the stability of the catalyst is monitored by various characterization techniques.

Journal

Advanced Sustainable SystemsWiley

Published: Apr 1, 2021

Keywords: ; ; ; ;

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