Mechanistic insights into phase transition and metal ex-solution phenomena of Pr0.5Ba0.5Mn0.85Co0.15O3-δ from simple to layered perovskite under reducing conditions and enhanced catalytic activity
- Title
- Mechanistic insights into phase transition and metal ex-solution phenomena of Pr0.5Ba0.5Mn0.85Co0.15O3-δ from simple to layered perovskite under reducing conditions and enhanced catalytic activity
- Author
- 김경학
- Issue Date
- 2020-09
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- ENERGY & ENVIRONMENTAL SCIENCE, v. 14, no. 2, page. 873-882
- Abstract
- We use density functional theory calculations and in situ X-ray diffraction spectroscopy experiments on Co-doped Pr0.5Ba0.5MnO3-delta (PBMCO) to understand how the phase transition from PBMCO to layered PBMCO occurred. The role of Co dopants for both the phase transition and the ex-solution is also elucidated. It turns out that the selective formation of oxygen vacancies at the Pr layer plays a key role in the phase transition to layered perovskite. The ex-solved Co nanoparticles showed higher catalytic activity than the doped one for CO oxidation. These results can guide the design of highly-active perovskite-based redox catalysts.
- URI
- https://pubs.rsc.org/en/content/articlelanding/2021/EE/D0EE02875Dhttps://repository.hanyang.ac.kr/handle/20.500.11754/170724
- ISSN
- 1754-5692; 1754-5706
- DOI
- 10.1039/d0ee02875d
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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