Facile Method for Preparation of Silica Coated Monodisperse Superparamagnetic Microspheres

Figure 5

Silica coating of magnetized PS-DVB-SO₃H microbeads. SEM images of magnetized PS-DVB-SO₃H microbeads (a, c) before and (b, d) after silica coating at low magnification and high magnification. Cross-sectioned TEM images of (e) magnetized PS-DVB-SO₃H and (f) silica coated magnetized PS-DVB-SO₃H microbeads.

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