Issue 5, 2023

Reconstructing atomic Fe coordination in the PMS activation process to realize efficient BPA degradation at low temperature

Abstract

Improving the performance of single-atom catalysts (SACs) is still challenging in Fenton-like reactions for degrading refractory organic pollutants. Here, we designed P and N co-doped Fe SACs to regulate the electronic structure of Fe active sites and enhance the reaction kinetics of peroxymonosulfate (PMS) activation. The obtained heteroatom-doped Fe SACs for the first time exhibited an ultra-low activation energy (ca. 3.7 kJ mol−1) and excellent degradation efficiency for bisphenol A (BPA) in a wide pH range (4.3–9.2). The superior reaction kinetics of the Fe SACs were attributed to enriching the electron density of atomic Fe and then forming dual electron-rich/-deficient sites, which accelerated the electron transformation to generate reactive oxygen species (ROS). In this study the heteroatom-doped Fe SACs with rapid reaction kinetics are achieved, and provides an idea to design SACs with superior performance in heterogeneous Fenton-like reactions.

Graphical abstract: Reconstructing atomic Fe coordination in the PMS activation process to realize efficient BPA degradation at low temperature

Supplementary files

Article information

Article type
Paper
Submitted
29 dec 2022
Accepted
07 mar 2023
First published
08 mar 2023

Environ. Sci.: Nano, 2023,10, 1284-1296

Reconstructing atomic Fe coordination in the PMS activation process to realize efficient BPA degradation at low temperature

Y. Lin, W. Qin, Y. Lu, M. Ren, P. Gao, F. Xiao and S. Yang, Environ. Sci.: Nano, 2023, 10, 1284 DOI: 10.1039/D2EN01156E

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