Cu-doped oxygen-rich vacancy MOFs derived perovskite for enhanced mineralization of refractory organics through synergistic non-radical species effects.

[Display omitted] • Cu-doped MOFs create oxygen-rich vacancy LaFeO 3 via Prussian blue MOFs. • The catalyst exhibits exceptional pH tolerance, breaking down various pollutants. • It effectively removes total organic carbon in both Bisphenol A (BPA) and tetracycline. • Singlet oxygen and superoxide radicals drive BPA degradation. • Boosting catalyst-peroxymonosulfate interaction using Cu doping strategy. This research focused on creating oxygen vacancy-enriched copper-doped LaFeO 3 perovskite using a Prussian blue MOF template. This new material, LFO-Cu, showed outstanding Bisphenol A (BPA) degradation with 98 % efficiency in just 30 min, ten times faster than pure LaFeO 3 (LFO). Moreover, the LFO-Cu/peroxymonosulfate (PMS) system worked effectively at pH levels from 4 to 10, breaking down various pollutants (TC, PhOH, MV, MB), and removing 85 % TOC in BPA and 50 % in TC. Density Functional Theory (DFT) calculations revealed that copper strengthened the catalyst-PMS interaction, leading to the generation of highly reactive oxygen species (ROS), primarily singlet oxygen (1O 2) and superoxide radicals (O 2 –·). A degradation pathway was proposed, showing less toxic intermediates than BPA. In summary, copper-doped oxygen-rich vacancy MOFs-derived perovskite has significant potential for improving refractory organic mineralization. [ABSTRACT FROM AUTHOR]