Synthesis of Nearly Monodisperse Iron Oxide and Oxyhydroxide Nanocrystals


  • This work was supported by NSFC (20501013, 50372030, 20131030, 90406003), the Foundation for the Author of National Excellent Doctoral Dissertation of P.R. China and the State Key Project of Fundamental Research for Nanomaterials and Nanostructures (2003CB716901). Supporting Information is available online from Wiley InterScience or from the author.


Uniform magnetite, hematite, and goethite nanocrystals were prepared through an attractive method based on an oleic acid/alcohol/water system. By adjusting the synthetic parameters (base concentration, alcohol content, categories of alcohols, etc.), the controlled synthesis of uniform magnetite, hematite, and goethite nanocrystals can be easily achieved. Detailed investigations on the effect of the experimental parameters on the morphology of the final products and the phase transitions among the magnetite, hematite, and goethite phases were carried out. Finally, a method of doping other metal ions into magnetite was developed and the magnetic properties of magnetite doped with different metal elements were studied.