Size-Controlled Synthesis of Magnetite Nanoparticles

作者：Shouheng Sun, Hao Zeng · 发表于：Journal of the American Chemical Society · 年份：2002 · DOI：10.1021/ja026501x · 被引用次数：2834 · 研究领域：Magnetic Properties and Synthesis of Ferrites、Iron oxide chemistry and applications、Nanomaterials for catalytic reactions

Monodisperse magnetite nanoparticles have been synthesized by high-temperature solution-phase reaction of Fe(acac)3 in phenyl ether with alcohol, oleic acid, and oleylamine. Seed-mediated growth is used to control Fe3O4 nanoparticle size, and variously sized nanoparticles from 3 to 20 nm have been produced. The as-synthesized Fe3O4 nanoparticles have inverse spinel structure, and their assemblies can be transformed into gamma-Fe2O3 or alpha-Fe nanoparticle assemblies, depending on the annealing conditions. The reported procedure can be used as a general approach to various ferrite nanoparticles and nanoparticle superlattices.