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Synthesis and characterization of metal nanoparticles in SiO2 amorphous glass by ion irradiation method
https://repo.qst.go.jp/records/78770
https://repo.qst.go.jp/records/78770958d38ea-4d62-4b4f-9d81-edc8045f8606
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2020-01-30 | |||||
| タイトル | ||||||
| タイトル | Synthesis and characterization of metal nanoparticles in SiO2 amorphous glass by ion irradiation method | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
| 資源タイプ | conference object | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Yamada, T.
× Yamada, T.× Maekawa, Masaki× Kawasuso, Atsuo× Maekawa, Masaki× Kawasuso, Atsuo |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The metal nanoparticles may show a specific property in electric state such as the quantum effect from the lower periodicity of crystal unlike bulk metal. They are expected as a new functional material by their properties, such as catalyst or surface plasmon resonance. However, the powdery nanoparticles have limits to apply for industry use, so the synthesis of them in and on bulky materials is useful way. It may develop a specific property like a simple substance particle even if I produce nanoparticles in an inorganic material in that. In general, it is well known that colloidal nanoparticles in liquids sometime show characteristic optical property called surface plasmon absorption (SPA) [1]. It is very difficult to control the shape and size of nanoparticles during synthesis. Ion implantation is candidate as one of the methods to synthesis the nanoparticles in glassy solids [2]. Furthermore, we found that it is possible to control the shape of nanoparticles synthesized in an amorphous SiO2 by heavy ion irradiation. In this study, we have tried to synthesize Ni nanoparticles by the implantation of Ni ions with energy of 30 – 300keV into SiO2 amorphous glass. Also we have investigated them by UV-vis absorption spectroscopy, X-ray diffraction and positron annihilation spectroscopy in order to estimate the character and structure of nanoparticles. In cases of Ni ion implantation with the energy more than 100 keV, the SPAs of Ni in ultraviolet and visible band appears with low irradiation fluence. This result shows the formation of Ni nanoparticles in SiO2 without annealing process. In these samples, decreasing trend of positron annihilation Doppler S parameter by the irradiation showing the shrinkage of free volume in SiO2 matrix. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 2019 4th Japan-China Joint Workshop on Positron Science | |||||
| 発表年月日 | ||||||
| 日付 | 2019-10-29 | |||||
| 日付タイプ | Issued | |||||
