Continuous Synthesis of Core-Shell Particles via Precise Control of Nucleation and Growth Processes Using Multiple Flow Reactors
| Project/Area Number |
23656490
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Properties in chemical engineering process/Transfer operation/Unit operation
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| Research Institution | Kyoto University |
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Principal Investigator |
MIYAHARA Minoru 京都大学, 工学(系)研究科(研究院), 教授 (60200200)
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| Co-Investigator(Kenkyū-buntansha) |
WATANABE Satoshi 京都大学, 大学院・工学研究科, 助教 (80402957)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | マイクロリアクタ / 連続合成 / 金ナノクラスター / 金ナノシェル / マイクロミキサー / 不均一核生成 / プラズモン / コアシェル粒子 / 流通式合成 / マイクロリアクター / 流通式 / 流通式反応 |
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| Research Abstract |
Silica-gold core-shell particles are a promising material for various applications. They are produced through seed-mediated growth, in which gold nanoparticles are seeded on the core particle surface followed by growth of the gold seeds into a shell. However, synthetic gold nanoshell production is typically a time-consuming batch-type process, and a simple and scalable process remains a challenge. In the present study, we established a continuous flow process for the seed-mediated growth of silica-gold nanoshells by exploiting the excellent mixing performance of a microreactor. In the Au seeding step, we reduced gold ions in the presence of core particles in the microreactor, which enabled one-step flow synthesis of gold-seeded silica particles. Flow shell growth is also realized using the microreactor by selecting an appropriate reductant. We finally connected the microreactors for the seeding and shell growth steps into a sequential flow process to synthesize gold nanoshells.
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Report
(4 results)
Research Products
(37 results)
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[Presentation] Flow Continuous Synthesis of Gold Nanoshells2014
Author(s)
Satoshi Watanabe, Tatsumasa Hiratsuka, Yusuke Asahi, Kazuhiro Mae, Minoru T. Miyahara
Organizer
13th International Conference on Microreaction Technology
Place of Presentation
Budapest University of Technology and Economics (Budapest, Hungary)
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