| Project/Area Number |
23710131
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | Kumamoto University |
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Principal Investigator |
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| Research Collaborator |
TATEISHI Hikaru 熊本大学, 大学院自然科学研究科, 学生
HATAKEYAMA Kazuto 熊本大学, 大学院自然科学研究科, 学生
FUNATSU Asami 熊本大学, 大学院自然科学研究科, 学生
OGATA Chikako 熊本大学, 大学院自然科学研究科, 学生
ECHIKAWA Makoto 熊本大学, 大学院自然科学研究科, 学生
KOGA Kotaro 熊本大学, 大学院自然科学研究科, 学生
KAMEI Yuki 熊本大学, 大学院自然科学研究科, 学生
WATANABE Yusuke 熊本大学, 大学院自然科学研究科, 学生
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | セリア / ナノシート / 触媒 / 発光 / ハイリッド |
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| Research Abstract |
In this project, we aimed to synthesize ceria nanosheets with high catalytic activity. Using dodecyl sulfate (DS) in a solution synthetic method, we could obtain novel layered materials composed of ceria nanosheets and DS interlayers. Monolayer nanosheets could be obtained by ultrasonic exfoliation of the layered materials in formamide. On catalytic activity, we could not obtain high catalytic activity, though we tried to interlayer ion exchange. Conventionally nonluminescent ceria yields intense UV photoluminescence with an internal quantum yield (QY) of 59% when self-organized into a nanosheet lamellar architecture with DS bilayers. The origin of luminescence exist at the organic/inorganic interfaces, where surface Ce3+ ions of ceria nanosheet layers graft with DS anions to activate radiative 5d to 4f transition.
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