Fig. 7
From: Magnetically separable Fe3O4-SiO2/Pt catalyst and its application for uranium reduction
Percentage conversion of U(VI) to U(IV) in 15 min for Fe3O4−10SiO2/Pt catalysts with reference to blank and Fe3O4−10SiO2 (a), UV-Vis spectra of uranium solution at different time intervals during the reduction using Fe3O4−10SiO2/Pt(300) catalyst. Inset show the digital photograph of U(IV) solution at different time interval (b). Percentage conversion of U(VI) to U(IV) in 15 min for Fe3O4−10SiO2/Pt(300) catalysts up to five consecutive cycles (c), bar plot of up to 80% U(VI) to U(IV) conversion for catalysts with different proportion of SiO2, synthesized at 300 °C (d).
