| 학회 | 한국화학공학회 |
| 학술대회 | 2021년 봄 (04/21 ~ 04/23, 부산 BEXCO) |
| 권호 | 27권 1호, p.996 |
| 발표분야 | 촉매 및 반응공학 |
| 제목 | Revealing Charge Transfer at the Interface of Cobalt Oxide and Ceria during CO Oxidation |
| 초록 | Cobalt oxide (Co 3 O 4 ) is a promising catalytic material for CO oxidation. When CeO 2 is deposited on Co 3 O 4 , the reaction rate is improved due to the superior oxygen supply of CeO 2 . To understand the role of the CeO 2 -Co 3 O 4 interface, we designed novel CeO 2 -deposited Co 3 O 4 nanocubes (NCs) with controlled CeO 2 layers. By selective deposition of CeO 2 to Co 3 O 4 NCs by varying surfactant concentration and pH, Co 3 O 4 NCs covered with 1-, 3-, and 6 faces of CeO 2 layers (CoCe-1F, CoCe-3F, and CoCe-6F) were prepared. Various in situ characterization studies reveal that the deposited CeO 2 supplies oxygen to the Co 3 O 4 surface, preventing Co 3 O 4 from being easily reduced. CoCe-3F with a maximum Co 3 O 4 /CeO 2 active interface exhibits the best CO oxidation rate due to the flexible change of the oxidation state at the interface. In this study, the reaction mechanism is clearly understood by investigating the changes in the oxidation state during the CO oxidation reaction at the Co 3 O 4 /CeO 2 interface. |
| 저자 | 윤신명 1 , 조진웅 2 , 현택환 2 , 안광진 1 |
| 소속 | 1 울산과학기술원, 2 서울대 |
| 키워드 | 촉매 |
| VOD | VOD 보기 |
| 원문파일 | 초록 보기 |
