Surface Processes Control the Fate of Reactive Oxidants Generated by Electrochemical Activation of Hydrogen Peroxide on Stainless-Steel Electrodes.

ABSTRACT: Low-cost stainless-steel electrodes can activate hydrogen peroxide (H₂O₂) by converting it into a hydroxyl radical (^•OH) and other reactive oxidants. At an applied potential of +0.020 V, the stainless-steel electrode produced ^•OH with a yield that was over an order of magnitude higher than that reported for other systems that employ iron oxides as catalysts under circumneutral pH conditions. Decreasing the applied potential at pH 8 and 9 enhanced the rate of H₂O₂ loss by shifting the process to a reaction mechanism that resulted in the formation of an Fe(IV) species. Significant metal leaching was only observed under acidic pH conditions (i.e., at pH <6), with the release of dissolved Fe and Cr occurring as the thickness of

SUBMITTER: Duan Y 

PROVIDER: S-EPMC10504418 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature