427310.fig.007
Figure 7: Absorption of MB dye solution (10−5 M, 20 mL), (a) alone, no UV irradiation, (b) alone, UV irradiation, (c) with Fe3O4/SiO2/TiO2 core-shell nanoparticles (5 mg) added, no UV irradiation, (30 mg) (d) Fe3O4/SiO2/TiO2 core-shell nanoparticles (30 mg) added, no UV irradiation, (e) with Fe3O4/SiO2/TiO2 core-shell nanoparticles (5 mg) added, UV irradiation, and (f) with Fe3O4/SiO2/TiO2 core-shell nanoparticles (30 mg) added, UV irradiation.