Crystallinity regulation-induced organic degradation on ultra-thin 2D Co3O4/SiO2 nanosheets: the critical trigger of oxygen vacancies

The crystallinity of ultrathin Co 3 O 4 nanosheet was tuned by adjusting the calcination atmosphere. The enriched oxygen vacancies, PMS-binding affinity and rapid Co 2+ /Co 3+ conversion triggered both radical and nonradical reactions for SMX oxidation.