Issue 9, 2019

The reactivity and pathway of Fenton reactions driven by hydroxybenzoic acids: the effect of hydroxylation

Abstract

Hydroxybenzoic acids (HBAs) are neglected as promoters of the Fenton reaction due to their low reduction capacity of Fe(III) and facile capture of hydroxyl radicals. However, autocatalysis often occurs in HBA degradation by the Fe(III)/H2O2 system. In this study, we investigated the effect of various HBA compounds on the Fenton reaction, and found that model HBAs also showed good catalytic activity. Their capability to promote the Fenton reaction is closely related to their readiness to be transformed into a hydroquinone-like (HQ-like) species. Electron-donating groups (EDGs) can accelerate the hydroxylation of aromatic compounds, thus leading to the rapid formation of a HQ-like species.

Graphical abstract: The reactivity and pathway of Fenton reactions driven by hydroxybenzoic acids: the effect of hydroxylation

Supplementary files

Article information

Article type
Paper
Submitted
23 мар 2019
Accepted
23 юли 2019
First published
24 юли 2019

Environ. Sci.: Water Res. Technol., 2019,5, 1507-1514

The reactivity and pathway of Fenton reactions driven by hydroxybenzoic acids: the effect of hydroxylation

D. Tang, G. Zhang, Y. Wang, F. Chen and J. Ma, Environ. Sci.: Water Res. Technol., 2019, 5, 1507 DOI: 10.1039/C9EW00250B

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