Figure 6From: Highly selective fluorescent chemosensor for Zn2+ derived from inorganic-organic hybrid magnetic core/shell Fe3O4@SiO2 nanoparticlesMagnetization curves of the Fe 3 O 4 @SiO 2 (a) and DTH-Fe 3 O 4 @SiO 2 (b). Inset shows that DTH-Fe3O4@SiO2 was dispersed to an external magnet in ethanol.Back to article page