| Project/Area Number |
26620191
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Inorganic industrial materials
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
TORIMOTO Tsukasa 名古屋大学, 工学(系)研究科(研究院), 教授 (60271029)
|
|---|
| Project Period (FY) |
2014-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
|
|---|
| Keywords | 電極触媒 / コア－シェル構造体 / イオン液体 / スパッタ蒸着 / 金属ナノ粒子 / 合金ナノ粒子 / エタノール酸化 / AuPd / 合金粒子 |
|---|
| Outline of Final Research Achievements |
The surface coating of metal nanoparticles resulting into core-shell structures is expected to improve the physicochemical properties of the nanoparticle cores without changing their size and shape. Here, we developed a novel strategy to uniformly coat noble metal particles of several nanometers in diameter with extremely thin In2O3 layer via ionic liquid/metal sputtering. AuPd particles as cores were prepared by simultaneous sputtering of Au and Pd into ionic liquids. The surface coating was carried out by In sputtering into the AuPd particle-containing solutions. The resulting particles had a core-shell structure, AuPd@In2O3, composed of AuPd core of ca. 2 nm diameter and uniform In2O3 shell of ca. 1 nm thickness on the core surface. Ethanol oxidation activity of AuPd@In2O3 was half that of AuPd particles. However the durability of AuPd@In2O3 electrocatalysts against thermal treatment was much higher than AuPd particles owing to the stabilization of AuPd core with In2O3 shell layer.
|
