| Project/Area Number |
15K13286
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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 | Kyoto University |
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Principal Investigator |
Sato Ryota 京都大学, 化学研究所, 助教 (80629890)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | ナノ粒子 / コロイド / リン化合物 / 合金 / ガルバニック置換反応 / 仮晶反応 / パラジウム / プラズモン / プラズモニック材料 / 無機ナノ粒子 / 固体触媒 |
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| Outline of Final Research Achievements |
We discovered a novel alloying phenomenon in which Pd-P nanoparticles (NPs) composed of palladium (Pd) and phosphorus (P) convert to Pd-based alloy NPs. By using this phenomenon, Pd-based alloy NPs of various compositions were successfully synthesized from Pd-P NPs with various particle sizes (3-50 nm), crystallinities (amorphous, crystalline), and morphologies (spherical, hollow, etc.). It was also revealed that this reaction is a novel phenomenon we named "element-selective galvanic replacement" and is a "pseudomorphic reaction" in which the morphology of NPs is retained before and after the reaction. In addition, we discovered that B2-PdIn NPs obtained by this method show localized surface plasmon resonance absorption in the visible light region. This result demonstrated the usefulness of this alloying method in material creation.
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