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2021 Fiscal Year Final Research Report

Single crystal nanowhiskers by stress-induced atomic diffusion using multi-layer metal nanostructures

Research Project

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Project/Area Number 20K20959
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 18:Mechanics of materials, production engineering, design engineering, and related fields
Research InstitutionNagoya University

Principal Investigator

TOKU Yuhki  名古屋大学, 工学研究科, 講師 (60750180)

Co-Investigator(Kenkyū-buntansha) 木村 康裕  名古屋大学, 工学研究科, 助教 (70803740)
Project Period (FY) 2020-07-30 – 2022-03-31
Keywordsナノワイヤ / 薄膜 / ナノ材料
Outline of Final Research Achievements

In this study, we attempted to create a single crystal nanowhisker to overcome the current situation where the copper catalyst used for CO2 decomposition is limited to particles. We have succeeded in the mass production of multi-walled metal hollow nanostructures, which is the basis for creating nanowhiskers, by using our original method for producing core-shell type nanotubes. Furthermore, to realize large area and mass production, we have realized the production of a single crystal copper nanowhisker using a template and electrodeposition technique. Nanowhiskers can be expected as a new CO2 decomposition catalyst with a high aspect ratio and a large single crystal exposed area. It can be applied to CO2 decomposition catalysts that suppress side reactions.

Free Research Field

材料力学

Academic Significance and Societal Importance of the Research Achievements

環境・エネルギー問題の解決のため,二酸化炭素(CO2)の分解・利用は極めて重要である.分解には銅のナノ粒子が知られているが,分解時のエネルギー収支が悪く,実用化には至っていない.エネルギー収支の改善には,触媒作用に有効な結晶面を特定し,露出面積を増やすといった対策が有効と考えられる.そこで本研究では独自のコアシェル型ナノチューブ作製法およびテンプレート法の利用により,大量の単結晶ナノウィスカー群の作製を実施した.本成果により特定の結晶面を多く有するナノ触媒を大量生産でき,副反応の小さいCO2分解触媒として期待ができることから,世界のグリーンエネルギー研究に貢献が期待できる.

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Published: 2023-01-30  

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