| 학회 |
한국화학공학회 |
| 학술대회 |
2009년 가을 (10/22 ~ 10/23, 일산 KINTEX) |
| 권호 |
15권 2호, p.2130 |
| 발표분야 |
재료 |
| 제목 |
Partial Leaching of Shape Controlled Au@Pt Nanocrystals |
| 초록 |
Platinum was selectively overgrown on (100) surfaces of the shape-controlled Au nanocrystals of cube, octahedra, and spheres. The shape of Au@Pt nanocrystals was modified by partial leaching of exposed Au core on Au@Pt nanocrystal. Cyanide ions were effectively used to leach exposed Au surface only for Au@Pt nanocrystal. The depth of leached surface was controlled by varying concentration of additional cyanide ions. Morphology of leached nanoparticle was observed by TEM and SEM. The change of optical property was observed by measuring red shifts of surface plasmon resonance (SPR) band by UV/Vis spectra. These partially leached Au@Pt nanocrystals can be potentially useful as surface-enhanced Raman scattering (SERS) substrate. |
| 저자 |
민민규, 이현주
|
| 소속 |
연세대 |
| 키워드 |
nanocrystal; core-shell; overgrowth; selective leaching
|
| E-Mail |
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| 원문파일 |
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