Synthesis of CaF<sub>2</sub> Nanostructures from Calcium Silicide Powders in Diluted Aqueous HF Solution

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  • Ono Yoshiki
    Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Ogino Ryohei
    Faculty of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Sakaida Masaki
    Faculty of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Sasaki Keigo
    Faculty of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Atsumi Nanae
    Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Numazawa Yushin
    Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Itoh Shogo
    Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Koga Tomoya
    Faculty of Engineering, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Huang Yalei
    Graduate School of Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Shimura Yosuke
    Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan Research Institute of Electronics, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Tatsuoka Hirokazu
    Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuoka 432-8561, Japan
  • Takahashi Naohisa
    Yamaha Advanced Material Research Group, Yamaha Motor Co., Ltd., Iwata, Shizuoka 438-8501, Japan

Description

<p>CaF2 nanostructures were synthesized from Ca-silicide powders by a diluted aqueous HF treatment. Commercially-available CaSi2 crystal powders and calcium silicide powders prepared by mechanical alloying were used as the source materials, and CaF2 nanosheet bundles and nanobunches of the CaF2 nanoparticles were obtained, respectively. The morphological property of the resulting CaF2 nanostructures was characterized by electron microscopy. It was found that the morphology of the resulting products depended on the starting materials. In addition, the growth mechanism of the CaF2 nanostructures was discussed from a topological synthesis point of view.</p>

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