Engineering of Cation Occupancy of CoFe ₂ O ₄ Oxidation Catalysts by Nanosecond, Single?Pulse Laser Excitation in Water

Due to the variability of cation occupancy octahedral and tetrahedral sites, spinel ferrites cobaltites are particularly interesting investigate activity trends in oxidation catalysis. Yet, preparation respective catalyst series remains challenging. We employed pulsed laser defect engineering CoFe2O4 nanoparticles water gradually alter sites by single pulses study its effect on cinnamyl alcohol oxidation. Three catalysts from different synthesis methods resembling initial site were chosen as starting materials. The laser-induced randomization was verified Mössbauer spectroscopy linearly correlated with conversion while size Co : Fe ratio maintained during processing. solidifies importance Co3+-sites feasibility processing for altering related crystallographic density