Synthesis of Co-NC catalysts from spent lithium-ion batteries for fenton-like reaction: Generation of singlet oxygen with ∼100% selectivity

Recycle of the spent lithium-ion batteries (LIBs) can reuse toxic heavy metals for synthesis useful materials. In this study, cobalt metal is obtained by recycling cathodes LIBs, which then used as source highly porous Co-NC composites. Attributing to addition EDTA-2Na and NaNO3 chelate agent activation respectively, very large surface areas (>3700 m2/g) structure be achieved. These composites activate peroxymonosulfate (PMS) effectively degradation bisphenol A (BPA) in aqueous solution. The optimized Co-NC/PMS system also shows good performance a wide pH range great tolerance different inorganic ions NOMs. Radical scavenging experiments EPR results prove that 1O2 only functional reactive oxidation species (ROS) BPA degradation. generation route PMS – *OH *O simulated proved DFT calculation. This work provides novel way synthesize effective catalysts from environmental wastes.