| 학회 |
한국화학공학회 |
| 학술대회 |
2011년 봄 (04/27 ~ 04/29, 창원컨벤션센터) |
| 권호 |
17권 1호, p.580 |
| 발표분야 |
에너지 |
| 제목 |
Voltammetric Study of CO2 adsorption on carbon-supported Pd-Pt core-shell nanoparticles |
| 초록 |
The relative surface concentration of Pt in Pd-Pt core-shell nanoparticles can be calculated from the changes in the oxidation charge of “reduced CO2”, which has the selective adsorption phenomena on Pt and Rh electrode surfaces. The growth mode of Pt-shell on the surface of core (Pd) nanoparticles was investigated from the CO2 selective adsorption and the following oxidation charge. The massPd-normalized relative surface coverage of Pt increased with the increase of the Pt loading. This result strongly support that additional Pt atoms are used for covering exposed Pd atoms. Therefore, the CO2 adsorption behavior on alloy nanoparticles canact as an indirect probe for the determinationof surface Pt concentrationin Pt-based alloy nanoparticles. |
| 저자 |
전태열1, 유성종2, 박영철1, 임성엽1, 김상경1, 백동현1, 정두환1, 성영은3
|
| 소속 |
1한국에너지기술(연), 2한국과학기술(연), 3서울대 |
| 키워드 |
core-shell nanoparticle; electrocatalyst; fuel cell
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
