title: Reducing size-dispersion in one-pot aqueous synthesis of maghemite nanoparticles.
abstract: Nanosized maghemite-like particles with reduced size-distribution were obtained using a one-pot synthesis route in aqueous medium. Forced hydrolysis of iron ions in ammoniac solution led to the formation of magnetite nanoparticles that were oxidized to maghemite in a hydrothermal digestion step that reduced the polydispersity of nanograins. The prepared nanoparticles were characterized by chemical analysis, X-ray diffractometry, magnetization, Raman spectroscopy and transmission electron microscopy measurements. Data showed that 14 nm-sized particles with polydispersity of about 0.14 were produced and, differently from other procedures, neither additional steps nor toxic reagents were needed to reduce size-dispersion or to oxidize magnetite to maghemite. These facts per se turn such nanodevice into a good potential choice for biomedical applications.
authors: Universidade de Brasília, Instituto de Química, Caixa Postal 04478, Brasilia - DF, CEP 70910-000, Brazil.
authors: A L
authors: AL
authors: Drummond
authors: N C
authors: NC
authors: Feitoza
authors: G C
authors: GC
authors: Duarte
authors: M J A
authors: MJ
authors: Sales
authors: L P
authors: LP
authors: Silva
authors: J A
authors: JA
authors: Chaker
authors: A F
authors: AF
authors: Bakuzis
authors: M H
authors: MH
authors: Sousa