Iron oxide nanopropellers prepared by a low-temperature solution approach

Wan Hua Yang, Chi Fang Lee, Horng Yi Tang, Dar Bin Shieh, Chen Sheng Yeh

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

The α-Fe2O3 (hematite) nanopropellers were synthesized via a low-temperature solution-based method using FeCl2 as a precursor in the presence of urea and glycine hydrochloride. The formation of α-Fe2O3 nanopropellers is strongly depended on the addition of glycine hydrochloride, which serves as a pH modulator and affects the oxidation rate of Fe2+. The structural evolution of the propeller-structured hematite was found to follow dissolution and recrystallization processes. For the structural conformation, each nanopropeller presents a hexagonal central column closed by six equivalent surfaces of {1̄100} and the six arrays of the nanopropeller structure are a result of growth along ±[1̄100], ±[1̄010], and ±[01̄10]. Preliminary results show that the magnetic maghemite (γ-Fe2O3) nanopropellers could also be prepared by a reduction and reoxidation process from the α-Fe2O3 (hematite) nanopropeller precursors.

Original languageEnglish
Pages (from-to)14087-14091
Number of pages5
JournalJournal of Physical Chemistry B
Volume110
Issue number29
DOIs
Publication statusPublished - 2006 Jul 27

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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