Research Article

Preparation and Photocatalytic Activity of Magnetic Fe3O4/SiO2/TiO2 Composites

Figure 6

Digital illumination photographs of Fe3O4/SiO2/TiO2 composites separated from solution by applying an added magnet ((a) 0 min, (b) 1 min, (c) 2 min, and (d) 5 min).
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(a)
409379.fig.006b
(b)
409379.fig.006c
(c)
409379.fig.006d
(d)