Production of magnetic iron oxide nanoparticles by using graphite arc discharge in Fe(OH)3 colloidal solution
✍ Scribed by Kiminobu Imasaka; Yusuke Kanatake; Junya Suehiro; Masanori Hara
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2008
- Tongue
- English
- Weight
- 856 KB
- Volume
- 91
- Category
- Article
- ISSN
- 1942-9533
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✦ Synopsis
In this study, magnetic iron oxide nanoparticles were produced by thermal treatment of Fe(OH) 3 colloidal solution after graphite arc discharge in the solution. The X-ray diffraction (XRD) pattern of the heat-treated powders showed that magnetic iron oxide nanoparticles (γ-Fe 2 O 3 or Fe 3 O 4 ) were produced by the phase transformation from α-Fe 2 O 2 at the thermal treatment temperature over 500 °C. The XRD pattern also indicated that the graphite powders produced by the arc discharge were contained in the Fe(OH) 3 colloidal solution, suggesting that the graphite powders contributed to the reduction process of α-Fe 2 O 3 .