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Advances in Materials Science and Engineering
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Advances in Materials Science and Engineering
/
2012
/
Article
/
Fig 4
/
Research Article
Preparation and Photocatalytic Activity of Magnetic Fe
3
O
4
/SiO
2
/TiO
2
Composites
Figure 4
TEM images of Fe
3
O
4
/SiO
2
(a) and Fe
3
O
4
/SiO
2
/TiO
2
composite microspheres (b).
(a)
(b)
