| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
포스터-촉매 |
| 제목 |
A Platform of Two Trades: Interface-Confined Pt Single-Atoms with Record-High Activity and Excellent Stability |
| 초록 |
Single-atom (SA) catalysts have been regarded as a next generation catalyst with exceptional catalytic efficiency. However, the general concern about thermodynamic instability of the SAs questions their practical values. Moreover, whether the SAs’ inherent catalytic activity is superior to the larger clusters or nanoparticles is still under debate. Here, we end above two controversies by achieving both high activity and stability of Pt-SAs in a single catalyst platform, Pt/CeOx-TiO2. Based on a hierarchical protocol of density functional theory calculation, time-resolved catalyst performance test, and operando synchrotron-based X-ray analysis, we present the record-high specific rate toward CO oxidation and excellent long-term stability under the harsh reaction conditions of Pt-SAs confined at the CeOx-TiO2 interfaces. |
| 저자 |
강은지1, 유미1, 최혁1, 하현우1, 윤지은1, 최진석2, Richard Celestre3, David A. Shapiro3, 유영상3, 김천중1, 김현유1
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| 소속 |
1Chungnam National Univ., 2KAIST, 3Lawrence Berkeley National Laboratory |
| 키워드 |
single-atom catalyst; stability; X-ray Absorption Spectroscopy; platinum
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| E-Mail |
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