期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 27, 期 -, 页码 303-308出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2014.06.052
关键词
Ferrite nanoparticles; Colloidal; Water-soluble
类别
资金
- Islamic Development Bank, Saudi Arabia
Highly monodisperse water soluble cobalt ferrite (CoFe2O4) and manganese ferrite (MnFe2O4) nanoparticles were synthesised by the hot injection thermolysis of pivalate clusters as single source precursors. The precursors [Fe2CoO((O2CBu)-Bu-t)(6)((HO2CBu)-Bu-t)(3)] (1) and [Fe2MnO((O2CBu)-Bu-t)(6)((HO2CBu)-Bu-t)(3)] (2) were decomposed in a mixture of polyvinylpyrrolidone (PVP) (capping agent) and triethylene glycol (TREG) (solvent) at 285 C to produce cobalt ferrite and manganese ferrite nanoparticles, respectively. The effect of the PVP on the size and morphology of the nanoparticles synthesised was investigated. Smaller sized nanoparticles of cobalt and manganese ferrite nanoparticles were obtained at higher PVP concentration and larger nanoparticles were produced at lower PVP concentrations. The ferrite nanoparticles produced are monodisperse, directly dispersible in water without any further size selection/postsynthesis procedure. The nanoparticles were characterised by powder X-ray diffraction (p-XRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), energy dispersive spectroscopy (EDS) and selected area electron diffraction (SAED). (C) 2014 Elsevier Ltd. All rights reserved
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