【公開日：2025.06.10】【最終更新日：2025.05.19】
課題データ / Project Data
課題番号 / Project Issue Number
24UT0196
利用課題名 / Title
単層CNT成長における鉄-コバルト2元系金属触媒の役割
利用した実施機関 / Support Institute
東京大学 / Tokyo Univ.
機関外・機関内の利用 / External or Internal Use
内部利用（ARIM事業参画者以外）/Internal Use (by non ARIM members)
技術領域 / Technology Area
【横断技術領域 / Cross-Technology Area】（主 / Main）計測・分析/Advanced Characterization（副 / Sub）-
【重要技術領域 / Important Technology Area】（主 / Main）次世代ナノスケールマテリアル/Next-generation nanoscale materials（副 / Sub）高度なデバイス機能の発現を可能とするマテリアル/Materials allowing high-level device functions to be performed
キーワード / Keywords
CNT,ナノ粒子/ Nanoparticles,電子顕微鏡/ Electronic microscope,ナノチューブ/ Nanotube
利用者と利用形態 / User and Support Type
利用者名（課題申請者）/ User Name (Project Applicant)
胡 清梅
所属名 / Affiliation
東京大学工学部研究科 機械工学専攻
共同利用者氏名 / Names of Collaborators in Other Institutes Than Hub and Spoke Institutes
Wanyu Dai
ARIM実施機関支援担当者 / Names of Collaborators in The Hub and Spoke Institutes
押川浩之
利用形態 / Support Type
（主 / Main）機器利用/Equipment Utilization（副 / Sub）-
利用した主な設備 / Equipment Used in This Project
報告書データ / Report
概要（目的・用途・実施内容）/ Abstract (Aim, Use Applications and Contents)
SWCNT is a type of material served as a critical template for the synthesis of 1D vdW heterostructures. Alcohol catalytic chemical vapor deposition (ACCVD) of single walled carbon nanotubes (SWCNT) was proposed in 2009 by Maruyama-Chiashi lab. However, alloy catalysis involved SWCNT synthesis process was not well investigated. To advance a better understanding of alloy catalysis involved SWCNT ACCVD synthesis, we desired to evaluate the synthesis efficiency and catalysis morphologies of different alloy ratios from Fe-Co alloy system. With a better control of SWCNT synthesis, the further development of 1D vdW would benefit from a better controlled template.
実験 / Experimental
The SWCNT ACCVD synthesis was conducted over different ratios of Fe-Co alloy catalysis. UV-vis-NIR absorption and Raman spectroscopy analysis were applied to evaluate the growth efficiency of ACCVD of different catalysis. TEM/STEM and EDS(JEM-2010F) mapping are applied to evaluate the morphology and local element distribution of catalysis.
結果と考察 / Results and Discussion
The optical results indicated the highest efficiency of ACCVD synthesis would appear at 25% Co catalysis. Absorbance fitting results indicated a large-diameter preferred distribution of as acquired SWCNTs. TEM/STEM and EDS mapping show the diameter distribution of different catalysis with varied Co ratio. A smaller diameter distribution after ACCVD process was observed in the 25% Co sample, which might correspond to the highest synthesis efficiency.
図・表・数式 / Figures, Tables and Equations
The absorbance curve and the corresponding of absorbance intensity of Chiral species and Co ratio
TEM/STEM and EDS mapping show the diameter distribution of different catalysis with varied Co ratio. A smaller diameter distribution after ACCVD process was observed in the 25% Co sample, which might correspond to the highest synthesis efficiency.
The EDS mapping of 25%Co sample grown at 850C 50Pa
その他・特記事項（参考文献・謝辞等） / Remarks(References and Acknowledgements)
成果発表・成果利用 / Publication and Patents
論文・プロシーディング（DOIのあるもの） / DOI (Publication and Proceedings)
口頭発表、ポスター発表および、その他の論文 / Oral Presentations etc.
- Qingmei Hu, Ya Feng, Kunio Mori, Ryo Yoshikawa, Yongjia Zheng, Wanyu Dai, Ryotaro Kaneda, Aina Fitó Parera, Wim Wenseleers, Sofie Cambré, Shohei Chiashi, Rong Xiang, Keigo Otsuka, Shigeo Maruyama, "67th The Fullerenes, Nanotubes and Graphene Research Society", 2024, Kochi University of technology
- Qingmei Hu, Ya Feng, Kunio Mori, Ryo Yoshikawa, Yongjia Zheng, Wanyu Dai, Ryotaro Kaneda, Aina Fitó Parera, Wim Wenseleers, Sofie Cambré, Shohei Chiashi, Rong Xiang, Keigo Otsuka, Shigeo Maruyama, "2024 A3 meeting“, Jincheng (China), 2024
特許 / Patents
特許出願件数 / Number of Patent Applications：0件
特許登録件数 / Number of Registered Patents：0件