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| タイトル: | Denary High-Entropy Oxide Nanoparticles Synthesized by a Continuous Supercritical Hydrothermal Flow Process |
| 著者: | Hanabata, Shota Kusada, Kohei    https://orcid.org/0000-0002-9679-6749 (unconfirmed)Yamamoto, Tomokazu Toriyama, Takaaki Matsumura, Syo Kawaguchi, Shogo Kubota, Yoshiki Nishida, Yoshihide Haneda, Masaaki Kitagawa, Hiroshi |
| 著者名の別形: | 花畑, 翔太 草田, 康平 山本, 知一 鳥山, 誉亮 松村, 晶 河口, 彰吾 久保田, 佳基 西田, 吉秀 羽田, 政明 北川, 宏 |
| キーワード: | Anions Catalytic activity Elements Solution chemistry Transition metals |
| 発行日: | 10-Jan-2024 |
| 出版者: | American Chemical Society (ACS) |
| 誌名: | Journal of the American Chemical Society |
| 巻: | 146 |
| 号: | 1 |
| 開始ページ: | 181 |
| 終了ページ: | 186 |
| 抄録: | High-entropy oxide nanoparticles (HEO NPs) have been intensively studied because of their attractive properties, such as high stability and enhanced catalytic activity. In this work, for the first time, denary HEO NPs were successfully synthesized using a continuous supercritical hydrothermal flow process without calcination. Interestingly, this process allows the formation of HEO NPs on the order of seconds at a relatively lower temperature. The synthesized HEO NPs contained 10 metal elements, La, Ca, Sr, Ba, Fe, Mn, Co, Ru, Pd, and Ir, and had a perovskite-type structure. Atomic-resolution high-angle annular dark-field scanning transmission electron microscopy and energy-dispersive X-ray spectroscopy measurements revealed homogeneous dispersion of the 10 metal elements. The obtained HEO NPs also exhibited a higher catalytic activity for the CO oxidation reaction than that of the LaFeO₃ NPs. |
| 記述: | 10元系多元素酸化物ナノ結晶の瞬時合成 --1秒未満で合成完了！焼成が不要な合成方法--. 京都大学プレスリリース. 2024-01-05. |
| 著作権等: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in 'Journal of the American Chemical Society', copyright © 2023 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jacs.3c07351 The full-text file will be made open to the public on December 28, 2024 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
| URI: | http://hdl.handle.net/2433/286580 |
| DOI(出版社版): | 10.1021/jacs.3c07351 |
| PubMed ID: | 38153046 |
| 関連リンク: | https://www.kyoto-u.ac.jp/ja/research-news/2024-01-05-0 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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