| Abstract
| - We introduce a simple approach to synthesize high-quality Fe3O4 nanosheets at low temperature. By oxidizingpure Fe substrates in acidic solution on a hot plate maintained at 70 °C, we have grown the nanosheets inlarge-scale. The samples were characterized by SEM, XRD, TEM, micro-Raman, and VSM. Flowing O2 gasinto the solution during oxidation enhances the growth rate of the nanosheets and thereby shortens the growthtime from 24 h to 15 min. The magnetic property of the sample was also investigated. This technique canpotentially be extended for large-scale synthesis of other metal-oxide nanosheets such as ZnO.
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