Self-regulation of Lewis acid sites on FeOCl toward piezo-self-Fenton reaction for continuous hydroxyl radicals generation

). The FeOCl piezo-self-Fenton system exhibits exceptional broad-spectrum degradation efficiency, operational stability, and scalability for the treatment of pharmaceutical wastewater. This work highlights the in-situ regulation of surface property by the induced piezopotential as a new feature for the piezocatalysts, which contributes to the enhancement of piezocatalytic activity and even changes the reaction pathway.