Thermal transformation of cubic-shaped MSn(OH)<sub>6</sub> (M = Ca, Mn, Co, and Zn) hydroxides to SnO<sub>2</sub>–MO<i><sub>x</sub></i> mixed oxides

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  • Yamaura Hiroyuki
    Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University
  • Tajima Emiri
    Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University
  • Nishibori Maiko
    Department of Advanced Materials Science and Engineering, Faculty of Engineering Sciences, Kyushu University
  • Yamaguchi Syuhei
    Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University
  • Shimanoe Kengo
    Department of Advanced Materials Science and Engineering, Faculty of Engineering Sciences, Kyushu University
  • Yahiro Hidenori
    Department of Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University

説明

<p>The tin–metal mixed hydroxides CaSn(OH)6, MnSn(OH)6, CoSn(OH)6, and ZnSn(OH)6, with cubic morphologies, were prepared using a coprecipitation method; they were subsequently transformed into the corresponding tin–metal mixed oxides by calcination at 600–900 °C. The crystalline structures and the morphologies of the various samples at each calcination step (just prepared, dried at 110 °C, and calcined at 600 and 900 °C) were systematically evaluated by X-ray diffractometry, scanning electron microscopy, transmission electron microscopy, and X-ray absorption fine structure analyses. The cubic shapes of the CaSn(OH)6 and ZnSn(OH)6 nanoparticles were maintained after calcination of them at 600 and 900 °C, while those of MnSn(OH)6 and CoSn(OH)6 ones were not maintained after calcination of them.</p>

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