Distinguishing homogeneous advanced oxidation processes in bulk water from heterogeneous surface reactions in organic oxidation.

ABSTRACT: Clarifying the reaction pathways at the solid-water interface and in bulk water solution is of great significance for the design of heterogeneous catalysts for selective oxidation of organic pollutants. However, achieving this goal is daunting because of the intricate interfacial reactions at the catalyst surface. Herein, we unravel the origin of the organic oxidation reactions with metal oxide catalysts, revealing that the radical-based advanced oxidation processes (AOPs) prevail in bulk water but not on the solid catalyst surfaces. We show that such differing reaction pathways widely exist in various chemical oxidation (e.g., high-valent Mn³⁺ and MnO_X) and Fenton and Fenton-like catalytic oxidation (e.g., Fe²⁺ and FeOCl catalyzing H₂O₂

SUBMITTER: Zhang YJ 

PROVIDER: S-EPMC10193935 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature