2017 Fiscal Year Final Research Report
Preparation of photocatalytic rare-earth nanocrystals using long-wavelength excitation
| Project/Area Number |
16H07375
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Physical pharmacy
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| Research Institution | Hyogo University of Health Sciences |
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Principal Investigator |
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| Project Period (FY) |
2016-08-26 – 2018-03-31
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| Keywords | ナノ結晶 / 希土類 / 光触媒 / フッ化物 / アップコンバージョン |
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| Outline of Final Research Achievements |
Lanthanide (Ln) nanoparticles were prepared by thermal reaction of Ln complexes (Ln: Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb) as single source precursors at 320℃ for 3 hours under Ar atmosphere. XRD measurements and TEM observations confirmed the formation of lanthanide fluoride nanoparticles. In particular, europium (Eu) fluoride nanoparticles formed different crystal structures by synthetic solvents, oleic acid or oleylamine. Oleic acid led to a formation of Eu(III) nanoparticles, and their characteristic emission of Eu(III) at 591 and 614 nm were observed. On the other hand, oleylamine led to a formation of Eu(II) nanoparticles having large magneto-optical effect. Photocatalytic properties of Ln fluoride nanoparticles were estimated by degradation of coumarin and preparation of 7-hydrocoumarin. As a result, photocatalytic properties of Ln nanoparticles were observed, and improved by mixed more than one Ln ions.
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| Free Research Field |
物理化学
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