| 학회 |
한국공업화학회 |
| 학술대회 |
2021년 봄 (05/12 ~ 05/14, 부산 벡스코(BEXCO)) |
| 권호 |
25권 1호 |
| 발표분야 |
포스터-촉매 |
| 제목 |
Rational Design of Highly-Stable and -Reactive Au Single Atom Catalysts Dispersed on Hybrid-oxide Support |
| 초록 |
Single-atom catalysts (SACs), which are atomically dispersed metals on a support surface, have been regarded as a next generation catalyst with exceptional catalytic efficiency. However, the thermodynamic instability of the SACs leads to agglomeration into NPs. Here, we synthesized Au/CeO2-TiO2 hybrid-oxide catalysts using deposition-precipitation method to design reactive and stable Au SACs for low-temperature CO oxidation. The structure of synthesized Au/CeO2-TiO2 was characterized by HRTEM, XRD, and XPS analysis, and the catalytic properties were investigated using the CO oxidation reaction. Anchored Au single atoms at the CeO2-TiO2 interface show higher activity for low-temperature CO oxidation than Au/TiO2 catalysts. Based on a combinatorial study of DFT calculations and experimental catalyst analysis, we suggest a methodology to design the significantly active Au SACs and provide an insight into the stabilization of the Au single atoms under the reaction condition. |
| 저자 |
강은지, 유미, 최혁, 윤지은, 김다혜, 주재은, 김현유
|
| 소속 |
충남대 |
| 키워드 |
single-atom catalyst; gold; CO oxidation
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| E-Mail |
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