Formation of ultralong ordered hydration structure of molecularly thin oxide layers and its application
| Project/Area Number |
16K13631
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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 |
Nanomaterials chemistry
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
Sasaki Takayoshi 国立研究開発法人物質・材料研究機構, 国際ナノアーキテクトニクス研究拠点, 拠点長 (70354404)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 遷移金属層状酸化物 / 酸化物ナノシート / 巨大水和膨潤 / 長周期配列 / 構造色 / ２次元ナノシート / ナノシート / 長周期構造 |
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| Outline of Final Research Achievements |
We showed that platelet crystals of layered metal oxides undergo accordion-like massibve swelling in aqueous solutions of amines and organoammonium ions. The interlayer separation expanded to several nm to over 100 nm, depending on their concentration. These swollen crystals could be disintegrated into molecularly thin 2D oxide layers by applying some external force. The resulting oxide nanosheets formed a unique lamellar structure with a huge intersheet separation, which reached several hundreds nm after removing the electrolyte used for exfoliation.
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| Academic Significance and Societal Importance of the Research Achievements |
無機層状結晶が大きな水和膨潤現象を示すことは、一部の粘土鉱物を除いて知られていなかった。今回、層状遷移金属酸化物が水溶液中でその層間隔が100nmを超える極めて大きな膨潤反応を示すことを明らかにしたことは、現象そのものの特異性に加え、剥離ナノシート化していく過程を理解する上で学術的に大きな意義がある。さらに得られた酸化物ナノシートが可視光を干渉できるレベルの超長周期構造を形成することも基礎科学的に大変興味深い現象であるとともに、得られる構造色を活用した応用展開も期待される。
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Reversible Switching of the Magnetic Orientation of Titanate Nanosheets by Photochemical Reduction and Autoxidation2018
Author(s)
X. Wang, X. Li, S. Aya, F. Araoka, Y. Ishida, A. Kikkawa, M. Kriener, Y. Taguchi, Y. Ebina, T. Sasaki, S. Koshiya, K. Kimoto, and T. Aida
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Journal Title
Journal of the American Chemical Society
Volume: 140
Issue: 48
Pages: 16396-16401
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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