| 研究課題/領域番号 |
23K04552
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| 研究種目 |
基盤研究(C)
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| 配分区分 | 基金 |
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| 応募区分 | 一般 |
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| 審査区分 |
小区分28030:ナノ材料科学関連
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| 研究機関 | 国立研究開発法人産業技術総合研究所 |
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研究代表者 |
陳 国海 国立研究開発法人産業技術総合研究所, 材料・化学領域, 主任研究員 (20805642)
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| 研究期間 (年度) |
2023-04-01 – 2026-03-31
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| 研究課題ステータス |
交付 (2023年度)
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| 配分額 *注記 |
4,810千円 (直接経費: 3,700千円、間接経費: 1,110千円)
2025年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
2024年度: 1,560千円 (直接経費: 1,200千円、間接経費: 360千円)
2023年度: 2,080千円 (直接経費: 1,600千円、間接経費: 480千円)
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| キーワード | carbon nanotube / microplasma / high crystallinity / data-driven |
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| 研究開始時の研究の概要 |
Data-driven approach is used to elucidate key synthetic factors for structural control in nanomaterial synthesis, demonstrated by synthesizing high crystallinity long carbon nanotubes using multi-step microplasma-assisted gas phase synthesis to control the start/stop of catalyst nanoparticle growth.
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| 研究実績の概要 |
Data-driven research was conducted to explore important synthetic factors for achieving high crystallinity and yield in CNT synthesis using our current dataset. Simultaneously achieving these mutually exclusive properties in CNTs is a significant challenge, as it requires overcoming inherent trade-offs. A prediction model was established and subsequently validated experimentally. It revealed the surprising importance of the carbon feedstock, particularly its reactivity and concentration, as a means to overcome the trade-off. The results have been published in ACS Nano.
Experimentally, the size of catalyst particles and CNTs can be modulated by adjusting the residence time in plasma. A clear downshift of Raman RBM peaks was observed as increasing H2 concentration. Further study is ongoing.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
3: やや遅れている
理由
In this fiscal year, my focus has primarily been on the data-driven research aspect, specifically the exploratory data analysis of our current dataset, a central component of my research plan. This analysis aims to deeply understand the key synthetic factors from among many, to guide further experimentation. As a result, I have published an article as the corresponding author in a high-impact factor journal (ACS Nano). Consequently, less effort has been devoted to the experimental part, leading to a slight delay in terms of the proposed research plan.
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| 今後の研究の推進方策 |
I plan to advance both theoretical and experimental aspects of my research, focusing on the most critical experiments and achievable goals. I will continue my data-driven research and aim to streamline experiments to rapidly gain insights, especially in controlling microplasma on catalyst nanoparticles and examining the effects of sheath gases and carbon mixing timing on CNT growth. I intend to develop protocols for systematically investigating how carbon mixing timing influences catalyst nanoparticle size, density, and activity, as well as CNT quality and yield. My approach will be iterative, using data from ongoing experiments to continuously improve the model. This strategy is designed to maximize the efficiency and impact of my research, keeping it on track towards its final goals.
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