Cobalt leaching inhibition: Transforming coordination polymers into spherical Co3O4@NC catalysts for accelerated tetracycline degradation via enhanced PMS activation

Co-based MOF as an efficient catalyst by peroxymonosulfate activation for degradation of tetracycline: synthesis and performance

“…Among other radicals (OH˙, O 2 ˙ − ), sulfate radicals (SO 4 ˙ − ) have a higher standard redox potential (2.5–3.1 eV) and wider adaptability range of pH, which have aroused great interest. 9–11 Compared to other methods (ultraviolet light, heat), transition metal activation (Co 2+ , Fe 2+ , and Mn 2+ ) has the advantage of being effective and controllable, and thus is widely used in activating PMS. 12–16 In particular, Co 2+ shows excellent catalytic performance for PMS due to its standard redox potential (1.82 V) being very close to that of PMS (1.75 V).…”

Oxygen Vacancy-Laden Confinement Impact on Degradation of Metal Complexes

“…react with heavy metal ions to form water-soluble metal complexes. − Due to the highly stable cages of circular structures with five/six-membered rings coordinating with metals, some conventional technologies fail to efficiently treat metal complexes. , Many efforts have been dedicated to developing environmentally friendly strategies to resolve the pollution of metal complexes. Persulfate (PS)-mediated advanced oxidation processes (AOPs) can utilize either radical-driven processes to generate highly reactive radicals (e.g., SO 4 ·– and · OH) or direct electron transfer to induce nonradical processes for the remediation of metal complexes. − Especially, the heterogeneous catalysis of CuO-based catalysts is relevantly stable and can realize the reutilization of catalysts. , By regulating the oxygen vacancy ( Vo ), Vo -laden CuO has been verified to significantly improve the catalytic activity toward PDS activation by the nonradical pathway . For the formation of Vo on CuO, the release of lattice oxygen in the pyrolysis of Cu­(OH) 2 is critical, and it is dependent on the internal (coordinational) and external environment.…”