Template-free hydrothermal synthesis of hollow hematite microspheres

Qiang Dong, Nobuhiro Kumada, Yoshinori Yonesaki, Takahiro Takei, Nobukazu Kinomura, Dan Wang

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)

Abstract

Hollow hematite (α-Fe2O3) microspheres with an average diameter of 3-4 μm and a shell thickness of approximate 150 nm was synthesized by a simple hydrothermal route using FeCl3•6H 2O solution and acetic acid without using any templates. The hollow microspheres were composed of α-Fe2O3 nanoparticles with the diameter range from 20 to 40 nm. The effects of reaction parameters such as reaction time, temperature, concentration of FeCl3• 6H2O solution, and initial pH on the morphology of the final products were investigated. A possible formation mechanism of hollow α-Fe 2O3 microspheres was also proposed, where the acetic acid played a role of etching in the formation of hollow structure.

Original languageEnglish
Pages (from-to)5685-5691
Number of pages7
JournalJournal of Materials Science
Volume45
Issue number20
DOIs
Publication statusPublished - 2010 Oct

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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