Uniform Organically Modified CeO2Nanoparticles Synthesized from a Carboxylate Complex under Supercritical Hydrothermal Conditions: Impact of Ce Valence

Yuki Omura, Akira Yoko, Gimyeong Seong, Maiko Nishibori, Kakeru Ninomiya, Takaaki Tomai, Tadafumi Adschiri

研究成果: ジャーナルへの寄稿学術誌査読

抄録

In this study, the supercritical hydrothermal synthesis of cerium oxide (CeO2) nanoparticles from a Ce-carboxylate complex with different valences was performed. Ce(III) and Ce(IV) octanoates were synthesized and hydrothermally treated at 400 °C for 10 min. The Ce valences were confirmed using Ce L3-edge X-ray absorption near-edge structure spectra. The hydrothermally treated products were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, and transmission electron microscopy. When Ce(III) octanoate was used as the precursor, cerium(III) hydroxide (Ce(OH)3) nanorods were predominantly formed, whereas CeO2(IV) nanoparticles were formed as a minor product. When Ce(IV) octanoate was used, uniform CeO2nanoparticles were synthesized directly.

本文言語英語
ページ(範囲)6008-6015
ページ数8
ジャーナルJournal of Physical Chemistry C
126
13
DOI
出版ステータス出版済み - 4月 7 2022
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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