Synthesis of hematite particles with various shapes by a simple hydrothermal reaction

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  • DONG Qiang
    Department of Research Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • WANG Dan
    State Key Laboratory of Multi-Phase & Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences
  • YAO Jianxi
    State Key Laboratory of Multi-Phase & Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences
  • KUMADA Nobuhiro
    Department of Research Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • KINOMURA Nobukazu
    Department of Research Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • TAKEI Takahiro
    Department of Research Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • YONESAKI Yoshinori
    Department of Research Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi
  • CAI Qiang
    Department of Materials Science and Engineering, TsingHua University

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Abstract

Hematite particles with various shapes have been synthesized through a simple hydrothermal reaction. The particle shape and size can be controlled by adjusting pH value in the starting solution. The products were characterized by X-ray powder diffraction patterns (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), high resolution transmission electron microscope (HRTEM), FT-IR, TG-DTA and mass spectrometry of gas species during TG-DTA. The TEM and HRTEM results revealed that large numbers of micropores ranging from 0.5-0.6 nm existed in the surface of spherical particles.

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