2020 Fiscal Year Final Research Report
Flocculation-enhanced catalysis of Cu nanoparticles specific to random assembly of inorganic nanosheets
| Project/Area Number |
19K15660
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 36010:Inorganic compounds and inorganic materials chemistry-related
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| Research Institution | Kogakuin University (2020)
Chuo University (2019) |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | 銅ナノ粒子 / 層状粘土鉱物 / 光誘起電子移動 |
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| Outline of Final Research Achievements |
Catalytic activity of Cu nanoparticles synthesized in nanosheet assembly was investigated kinetically by using photoinduced electron transfer ((PET) to methylviologen (MV2+) as the electron acceptor. Even when the nanocomposite was flocculated by the addition of MV2+, the PET took place efficiently, indicating fierce assembling of the nanosheets promote the reactivity of the Cu nanoparticles. Adding excessive amount of MV2+, the PET took place with the MV2+ on the nanosheets but also in the solution. Thus, it was found that the nanosheet assembly possesses pores, where MV2+ dissolved in the solution could be distributed and was reduced by the Cu nanoparticles.
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| Free Research Field |
物理化学
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| Academic Significance and Societal Importance of the Research Achievements |
コロイド粒子の凝集は一般に触媒活性を下げることが知られているが，ナノシートの集合体を担体としたナノ粒子の触媒活性について探究した本研究においては，それが当てはまらないことが明らかとなった．これは担体であるナノシートが大きな排除体積を有することに由来するためであり，ナノシートのランダム集合体という極めて秩序性の低い系が反応活性という点では有利にはたらくことが見出された．
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