Large-scale synthesis of hierarchical alpha-FeOOH flowers by ultrasonic-assisted hydrothermal route

H. F. Chen, G. D. Wei, X. Han, S. Li, P. P. Wang, Maxim Petrovich Chubik, A. Gromov, Z. P. Wang, W. Han

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

In this paper, we report a facile, an environmental friendly ultrasonic-assisted hydrothermal route for preparation of goethite flower structures using Fe nanopowders at low temperature (85°C). The flower structure consisted of tens of hundreds of nanowires and such structures can further self-assemble with the flake with micro size area. Structural, morphological, and elemental analysis revealed that the products consisted of flower-like structures with high structural uniformity, good crystal quality, and high yields. Influencing factors such as the reaction temperature, pH value, and the deposition time were systematically investigated. A possible formation mechanism was proposed on the basis of the experimental results. Magnetic measurements showed that the as-obtained goethite flowers exhibited weakly ferromagnetic characteristics at room temperature, which were quite different from those of the corresponding bulk materials.

Original languageEnglish
Pages (from-to)252-259
Number of pages8
JournalJournal of Materials Science: Materials in Electronics
Volume22
Issue number3
DOIs
Publication statusPublished - 1 Mar 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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