Chemically Designed Growth of Monodisperse Iron Oxide Nanocrystals
Chemically Designed Growth of Monodisperse Iron Oxide Nanocrystals
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DOI：
10.1021/cg300936t
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发表时间：
2012-12-01
影响因子：
3.8
通讯作者：
Mathur, Sanjay
中科院分区：
文献类型：
--
作者：
Cavelius, Christian;Moh, Karsten;Mathur, Sanjay
We describe here a chemically controlled pathway for the designed synthesis of iron oxide nanoparticles by thermal decomposition of iron(II) and iron(III) oxalates in high-boiling solvents in the presence of oleylamine and oleic acid acting as capping ligands. The phase composition of the nanocrystals (Fe, FeO, Fe3O4, or alpha-Fe2O3) could be precisely controlled by adjusting the synthesis conditions or by addition of appropriate oxidants, such as trimethylamine-N-oxide (TMAO), which produced highly monodisperse iron(III) oxide particles in the range of 6-25 nm in good yields. The decomposition behavior of different precursor/TMAO mixtures was elucidated by differential scanning calorimetry and thermogravimetry, and resulting particles were characterized by comprehensive HR-TEM and XRD analyses.
