Journal of Nanomaterials / 2016 / Article / Fig 6

Research Article

Synthesis and Characterization of Nontoxic Hollow Iron Oxide (-) Nanoparticles Using a Simple Hydrothermal Strategy

Figure 6

SEM images showing the growth of hollow spheres of α-Fe2O3 at 24 h reaction time and after calcination: (a) dispersion in ethanol showing the growth mechanism of hollow NPs and (b) hollow NPs showing the pores or broken shell confirming the hollow structure inside the α-Fe2O3 porous shells.

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