| 학회 |
한국공업화학회 |
| 학술대회 |
2020년 가을 (10/28 ~ 10/30, 광주 김대중컨벤션센터(Kimdaejung Convention Center)) |
| 권호 |
24권 1호 |
| 발표분야 |
[촉매] 불균일계 촉매에서의 금속-담체 상호작용 |
| 제목 |
계면 엔지니어링을 통한 Pt 단원자의 촉매 특성 최적화 (Catalytic supremacy of Pt single-atoms achieved by interface engineering) |
| 초록 |
Utilizing Pt single-atoms as a reaction center resolves a grand challenge in the economic use of Pt in catalysis. By manipulating the chemical nature of multi-component interfaces, we demonstrate a strategy for controlled formation of highly reactive CO-tolerant Pt single-atom catalysts activated at CeOx-TiO2 interfaces. The addition of Ce to TiO2 support particles creates a CeOx-TiO2 interface, resulting in a strong electronic interaction between Pt and CeOx-TiO2 interfaces that stabilizes Pt single-atoms. We identify how the CeOx-TiO2 interfaces activate the interface-mediated Mars-van Krevelen mechanism of CO oxidation, protecting Pt single-atoms from CO-poisoning. Addition of 1 wt.% Ce enhances the CO oxidation activity relative to a bare Pt/TiO2 catalyst by a factor of 15.1. These results elaborate how the noble metal single-atom catalysts can be generated and optimized by atomic-scale tuning of the metal-support interface. |
| 저자 |
김현유 |
| 소속 |
충남대 |
| 키워드 |
단원자 촉매; 실시간 분석; 전자밀도함수이론; 백금 촉매; 산화반응
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| E-Mail |
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