Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 325, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2023.124545
Keywords
-
Categories
Ask authors/readers for more resources
Oxygen reduction reaction via 3-electron pathway is a promising approach for generating reactive oxygen species in heterogeneous electro-Fenton (H-EF) process. Bimetal alloy nanoparticles encapsulated within carbon layers (FeCo/C) showed exceptional performance in sulfamethoxazole removal in the H-EF process, and the performance was enhanced under alkaline conditions. The involvement of a surface-independent outer sphere electron transfer component was identified as the mechanism for the alkalinity-enhanced activity.
Oxygen reduction reaction via 3-electron pathway presents a promising approach for generating reactive oxygen species in heterogeneous electro-Fenton (H-EF) process. This approach overcomes the limitations posed by the slow accumulation of H2O2 via 2-electron ORR and the inefficient activation of H2O2 through Haber Weiss cycle. In this study, bimetal alloy nanoparticles were encapsulated within carbon layers (FeCo/C) by a general MOF-derived strategy, resulting in an overall electron transfer number of 2.98 during the H-EF process. Under optimal modification conditions, the prepared FeCo/C exhibited exceptional performance in sulfamethoxazole removal. Furthermore, the performance was enhanced under alkaline conditions. The apparent rate constant increased from 0.02 to 0.03 min-1 as the pH value increased from 3 to 11. The mechanism underlying this alkalinity-enhanced activity was attributed to the involvement of a surface-independent outer sphere electron transfer component, which provides valuable insights into the potential application of the H-EF process for treating alkaline wastewater.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available