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Iron oxide nanoparticles(FeO_x NPs, 5–30 nm size) prepared via laser ablation in liquid were supported onto Indium Tin Oxide conductive glass slides by magnetophoretic deposition(MD) technique. The resulting Fe O x@ITO electrodes are characterized by a low amount of iron coverage of 16–50 nmol/cm~2,and show electrocatalytic activity towards water oxidation in neutral phosphate buffer pH 7 with 0.58 V overpotential and quantitative Faradaic efficiency towards oxygen production. XPS analysis on the oxygen region of the FeO_x films reveals a substantial hydration of the surface after catalysis, recognized as a crucial step to access reactivity.
Iron oxide nanoparticles (FeO_x NPs, 5-30 nm size) prepared via laser ablation in liquid were supported onto Indium Tin Oxide conductive glass slides by magnetophoretic deposition (MD) technique. The resulting Fe O x @ ITO electrodes are characterized by a low amount of iron coverage of 16-50 nmol / cm ~ 2, and show electrocatalytic activity towards water oxidation in neutral phosphate buffer pH 7 with 0.58 V overpotential and quantitative Faradaic efficiency towards oxygen production. XPS analysis on the oxygen region of the FeO_x films reveals a substantial hydration of the surface after catalysis, recognized as a crucial step to access reactivity.