2013 Fiscal Year Final Research Report
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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| 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 |
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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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Research Products
(19 results)
