Synthesis of magnetite (Fe 3O 4) nanoparticles without surfactants at room temperature

Iron oxide nanoparticles in the interval of 4–43 nm were synthesized by a colloidal method at room temperature, without use of surfactants and using precursors like FeCl 3·6H 2O and FeCl 2·4H 2O; deionizated water free of dissolved oxygen and ammonia solution (29% vol.) and using several aging times...

Full description

Saved in:
Bibliographic Details
Published inMaterials letters Vol. 61; no. 23; pp. 4447 - 4451
Main Authors Martínez-Mera, I., Espinosa-Pesqueira, M.E., Pérez-Hernández, R., Arenas-Alatorre, J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.2007
Subjects
HRTEM
Magnetic materials
Magnetite nanoparticles
Microstructure
Nanomaterials
XRD
Magnetite nanoparticles
Nanomaterials
Magnetic materials
XRD
Microstructure
HRTEM
Online AccessGet full text

Cover

More Information
Summary:Iron oxide nanoparticles in the interval of 4–43 nm were synthesized by a colloidal method at room temperature, without use of surfactants and using precursors like FeCl 3·6H 2O and FeCl 2·4H 2O; deionizated water free of dissolved oxygen and ammonia solution (29% vol.) and using several aging times (2, 5 and 10 min). A detailed study by X- ray diffraction (XRD), Conventional Transmission Electron Microscopy (CTEM), High-Resolution Transmission Electron Microscopy (HRTEM) and electron diffraction patterns showed that with a reaction time less than 5 min nanoparticles of magnetite phase (Fe 3O 4) were synthesized, and with a bigger time of reaction the lepidocrocite phase (FeO(OH)) was identified. The minor particle average size measured was 6 nm in the sample, 0.0125 M with 2 min of aging time (0.0125M2 m). In addition it was possible to obtain a narrow nanoparticle size dispersion from 4 to 10 nm for small aging times.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2007.02.018