High Photocatalytic Activity of Fe₃O₄-SiO₂-TiO₂ Functional Particles with Core-Shell Structure

Figure 10

(a) The ultraviolet visible absorption spectra of Fe₃O₄ and Fe₃O₄-SiO₂-TiO₂ particles. (b) The relationships between irradiation time and decoloration rate of the methylene blue solution by treated P25 particles, Fe₃O₄-SiO₂-TiO₂ particles, SiO₂-TiO₂ particles, and no particles under visible light.

(a)

(b)