| Project/Area Number |
24651131
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Nanomaterials/Nanobioscience
|
|---|
| Research Institution | Chiba University |
|---|
Principal Investigator |
NAKAMURA Masashi 千葉大学, 工学(系)研究科(研究院), 助教 (70348811)
|
|---|
| Project Period (FY) |
2012-04-01 – 2014-03-31
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
|---|
| Keywords | 燃料電池 / 表面X線回折 / 走査型トンネル顕微鏡 / 表面合金 / 電極反応 / 貴金属 / 電極触媒 |
|---|
| Research Abstract |
Surface structure of a PtSn surface alloy on Pt(111), activating the ethanol oxidation reaction, was determined by using in-situ scanning tunneling microscopy (STM) and X-ray diffraction. At the Sn coverage lower than 0.23, ordered structure of the PtSn alloy layer were observed by STM in perchloric acid. The superstructure with small domain size are formed at the Sn coverage = 0.23, which promotes the catalytic activity for the ethanol oxidation reaction with a high durability. X-ray structural analysis shows that penetration of Sn to subsurface was less than 1 %; PtSn alloy layer is mainly formed the surface layer of Pt(111). Sn atoms in the PtSn alloy layer protrude by 0.02 nm from the first Pt layer similar to the surface structure of Pt3Sn(111).
|
