Online ISSN: 1884-4111 Print ISSN: 0033-8303
Radioisotopes 68(3): 125-143 (2019)

総説Review Article

鉄化合物ナノ粒子とそのメスバウアースペクトルIron-based Nanoparticles and Their Mössbauer Spectra

東京理科大学理学部第二部化学科Department of Chemistry, Tokyo University of Science ◇ 162–8601 東京都新宿区神楽坂1–3 ◇ 1–3 Kagurazaka, Shinjuku-ku, Tokyo 162–8601, Japan

発行日:2019年3月15日Published: March 15, 2019


This review describes the synthesis of iron-based nanoparticles. Iron oxyhydroxide, iron oxide, iron carbide, and iron sulfide nanoparticles have been produced using various methods. Feroxyhyte δ-FeOOH nanoparticles were produced by the oxidation of precipitates obtained by hydrazine reduction of iron chloride. Similar nanocomposites doped with foreign atoms (Ag, Cu, or Zn) have been produced as well. Iron oxide (γ-Fe2O3) nanoparticles have been produced by a polyol method. When a sulfide source was added into the solution during synthesis, iron sulfide nanoparticles were obtained. Using this technique, a metastable trivalent iron sulfide (Fe2S3) was successfully synthesized. Amorphous iron/carbon particles were obtained by the sonochemical synthesis of ferrocene in diphenylmethane. Subsequent heating of the amorphous particles produced Fe3C, α-Fe, and γ-Fe nanoparticles. Laser ablation of iron metal in an organic solvent produced iron carbide nanoparticles. The reaction mechanism and the structures of the nanoparticles were studied using Mössbauer spectroscopy as well as X-ray diffraction and transmission electron microscopy.

Key words: iron-based nanoparticles; Mössbauer spectroscopy; polyol methods; sonochemistry; laser ablation in liquid

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