| Abstract Scope |
LiCoO₂ (LCO) is a common Li-ion battery cathode material, with lithium and cobalt known for their potential toxicity. Repurposing LCO for catalysis, particularly in pollutant decomposition, has shown promise in photocatalysis, electrocatalysis, and thermocatalysis. LCO's layered structure enables delithiation and intercalation, crucial for chemical exfoliation, leading to various catalytic intermediates. Our study examines three LCO forms: (i) acid-treated (protonated), (ii) post-base-treated (ready to exfoliate), and (iii) nanosheets in armored particles via Pickering emulsions. These are tested in pollutant degradation, CO oxidation, ammonium perchlorate decomposition, and BPA removal. We introduce novel methods for nanosheet fabrication in a pH-neutral medium, avoiding traditional highly alkaline conditions. Processing parameters, including acid and base concentrations, significantly impact catalytic performance, with optimal conditions following a "Goldilocks effect." Understanding LCO’s chemical, structural, and morphological changes is key to maximizing its catalytic potential. |