期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 6, 期 3, 页码 852-856出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2006.135
关键词
room temperature; solvent-free synthesis; monodispersed; magnetite nanocrystals
We have successfully demonstrated a facile, solvent-free synthesis of highly crystalline and monodisperse Fe3O4 nanocrystallites at ambient temperature avoiding any heating. Solid state reaction of inorganic Fe(II) and Fe(III) salts with NaOH was found to produce highly crystalline Fe3O4 nanoparticles. The reaction, if carried out in the presence of surfactant such as oleic acid-oleylamine adduct, generated monodisperse Fe3O4 nanocrystals extractable directly from the reaction mixture. The extracted nanoparticles were capable of forming self-assembled, two-dimensional and uniform periodic array. The new process Utilizes inexpensive and nontoxic starting materials, and does not require a use of high boiling point and toxic solvents, thus is amenable to an environmentally desirable, large-scale synthesis;of nanocrystals.
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