Production of Magnetic Iron Oxide Nanoparticles by using Graphite Arc Discharge in Fe(OH)3 Colloidal Solution

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  • Imasaka Kiminobu
    Graduate School of Information Science and Electrical Engineering, Kyushu University
  • Kanatake Yusuke
    Graduate School of Information Science and Electrical Engineering, Kyushu University
  • Suehiro Junya
    Graduate School of Information Science and Electrical Engineering, Kyushu University
  • Hara Masanori
    Graduate School of Information Science and Electrical Engineering, Kyushu University

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  • 水酸化鉄コロイド水溶液中でのグラファイトアーク放電を用いた磁性酸化鉄ナノ粒子の生成
  • スイサンカテツ コロイド スイヨウエキ チュウ デ ノ グラファイトアーク ホウデン オ モチイタ ジセイ サンカテツ ナノ リュウシ ノ セイセイ

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Abstract

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. X-ray diffraction (XRD) pattern of the heat-treated powders showed that magnetic iron oxide nanoparticles (γ-Fe2O3 or Fe3O4) were produced by the phase transformation from α-Fe2O3 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-Fe2O3.

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