不活性粒子混合下におけるPt触媒粒子の集団運動の変化(2025年度春期研究発表会特集)

• 資料種別: 記事
• タイトル: 不活性粒子混合下におけるPt触媒粒子の集団運動の変化
• 著者・編者: 大山 夏奈; 塩井 章久; 山本 大吾
• シリーズタイトル: 2025年度春期研究発表会特集
• 著者標目: 大山 夏奈; 塩井 章久; 山本 大吾
• 並列タイトル等: Chemically Driven Collective Motion in Mixtures of Catalytic and Inert Particles
• タイトル（掲載誌）: 粉体工学会誌 = Journal of the Society of Powder Technology, Japan / 粉体工学会 編
• 巻号年月日等（掲載誌）: 63(3)=682:2026
• 掲載巻: 63
• 掲載号: 3
• 掲載通号: 682
• 掲載ページ: 92-98
• 掲載年月日（W3CDTF）: 2026
• ISSN（掲載誌）: 0386-6157
• ISSN-L（掲載誌）: 0386-6157
• 出版事項（掲載誌）: 京都 : 粉体工学会
• 出版地（国名コード）: JP
• 本文の言語コード: jpn
• 件名標目: Collective motion; Catalytic particle; Active matter; Inert particle; Chemotaxis
• NDLC: ZP5
• 対象利用者: 一般
• 所蔵機関: 国立国会図書館
• 請求記号: Z17-38
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館雑誌記事索引; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 034624194; http://id.ndl.go.jp/bib/034624194
• 整理区分コード: 632

• 要約等: <p>Active matter often exhibits ordered collective motion, such as in bacterial colonies or swarms of fish and birds. Understanding the mechanisms underlying the complicated collective behaviors is significant to develop innovative chemical systems. We discovered that Pt catalytic particles with simpler structures exhibit a unique collective motion, that is, repetitive cluster formation and disintegration in an aqueous ethanol solution. In this study, the collective behavior of Pt particles is demonstrated in mixtures containing inert particles. Two distinct types of cluster formation were observed by varying the mixing ratio of the Pt and Au particles: Pt/Au mosaic-like clusters and Pt/Au core–shell clusters. In contrast, no Pt/silica cluster formation was observed in the silica particles mixed with Pt particles. In the Pt/Au core–shell clusters observed in this study, the thickness of the Au particle shell could be controlled by adjusting the concentration of the Au particle. This finding suggests that the spatial separation of Pt and Au particles can be realized under controlled conditions.</p>
• DOI: 10.4164/sptj.63.92
• オンライン閲覧公開範囲: インターネット公開
• 連携機関・データベース: 科学技術振興機構 : J-STAGE; http://www.jstage.jst.go.jp

• 要約等: <p>Active matter often exhibits ordered collective motion, such as in bacterial colonies or swarms of fish and birds. Understanding the mechanisms underlying the complicated collective behaviors is significant to develop innovative chemical systems. We discovered that Pt catalytic particles with simpler structures exhibit a unique collective motion, that is, repetitive cluster formation and disintegration in an aqueous ethanol solution. In this study, the collective behavior of Pt particles is demonstrated in mixtures containing inert particles. Two distinct types of cluster formation were observed by varying the mixing ratio of the Pt and Au particles: Pt/Au mosaic-like clusters and Pt/Au core–shell clusters. In contrast, no Pt/silica cluster formation was observed in the silica particles mixed with Pt particles. In the Pt/Au core–shell clusters observed in this study, the thickness of the Au particle shell could be controlled by adjusting the concentration of the Au particle. This finding suggests that the spatial separation of Pt and Au particles can be realized under controlled conditions.</p>
• DOI: 10.4164/sptj.63.92; https://doi.org/10.4164/sptj.63.92
• 関連情報（URI）: http://id.ndl.go.jp/bib/034624194; https://ndlsearch.ndl.go.jp/books/R000000004-I034624194
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: Japan Link Center; https://japanlinkcenter.org/top; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp
• 書誌ID（NDLBibID）: 034624194; http://id.ndl.go.jp/bib/034624194