CoSn(OH) nanocubes: Hydroxyl perovskite catalyst for efficient peroxymonosulfate activation in acetamiprid degradation.

This study presents the synthesis of a nano-cubic metal hydroxide with a perovskite structure, CoSn(OH), for the efficient activation of peroxymonosulfate (PMS) towards the degradation of acetamiprid (ACE) in water treatment. The CoSn(OH)/PMS system achieved complete degradation of ACE within only 12 min and exhibited outstanding catalytic stability. Our findings indicate that the non-radical mechanism, featuring singlet oxygen (O) and Co(IV)=O, is the primary contributor to the degradation process, while the role of radical species such as sulfate radical (SO) and hydroxyl radicals (·OH) is subordinate.