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

Figure 1

(a) The XRD spectrum of Fe₃O₄ particles. (b) The XRD spectrum of Fe₃O₄-SiO₂ particles. (c) The XRD spectrum of Fe₃O₄-SiO₂-TiO₂ particles.