Interface regulation in electro-Fenton for efficient environmental remediation

As a kind of advanced oxidation processes (AOPs), electro-Fenton (EF) is a promising wastewater treatment technology, in which interface regulation is vital for degradation of organic pollutants since it determine the in-situ formation of oxidant or active species. Herein, this article reviews the progress of high-yield H2O2 cathodes prepared by controlling the cathode configuration and catalyst modification. Meanwhile, various strategies of activating H2O2 are described, such as dual-cathode, bifunctional cathodes, and suspended catalysts in heterogeneous EF, achieving good pollutant removal efficiency. Finally, the challenges of interface regulation in EF for future study are summarized.