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 journalArticle

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

Fingerprint

Hematite
hematite
Iron oxides
iron oxides
hydrochlorides
glycine
Amino acids
Glycine
propellers
Propellers
ureas
Urea
Temperature
Modulators
Conformations
modulators
dissolving
Dissolution
Crystallization
Oxidation

All Science Journal Classification (ASJC) codes

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

Cite this

Yang, Wan Hua ; Lee, Chi Fang ; Tang, Horng Yi ; Shieh, Dar Bin ; Yeh, Chen Sheng. / Iron oxide nanopropellers prepared by a low-temperature solution approach. In: Journal of Physical Chemistry B. 2006 ; Vol. 110, No. 29. pp. 14087-14091.
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Iron oxide nanopropellers prepared by a low-temperature solution approach. / Yang, Wan Hua; Lee, Chi Fang; Tang, Horng Yi; Shieh, Dar Bin; Yeh, Chen Sheng.

In: Journal of Physical Chemistry B, Vol. 110, No. 29, 27.07.2006, p. 14087-14091.

Research output: Contribution to journalArticle

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T1 - Iron oxide nanopropellers prepared by a low-temperature solution approach

AU - Yang, Wan Hua

AU - Lee, Chi Fang

AU - Tang, Horng Yi

AU - Shieh, Dar Bin

AU - Yeh, Chen Sheng

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AB - 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.

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