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

Figure 8

(a) The images of the samples of water, methyl orange solution, methyl orange solution with Fe₃O₄-SiO₂-TiO₂ particles, methyl orange solution after being treated by Fe₃O₄-SiO₂-TiO₂ particles under ultraviolet light, and methyl orange solution after being treated by Fe₃O₄-SiO₂-TiO₂ particles under visible light. (b) The kinetic curves of methyl orange disappearance for Fe₃O₄-SiO₂-TiO₂ particles.

(a)

(b)