연구
Research Outcome
미래를 창조하는 포스텍 화학공학과
[표지논문] Mechanistic insights into the 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 a…
- Title of paper
- [표지논문] Mechanistic insights into the 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
- [한정우교수 연구실] 상전이 동반 엑솔루션을 통핸 촉매활성 향상
- Publication in journal
- Energy & Environmental Science 14 (2021), p873-882.
- Publication date
- 20210201
[Abstract]
We use density functional theory calculations and in situ X-ray diffraction spectroscopy experiments on Co-doped Pr0.5Ba0.5MnO3−δ (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.
DOI: doi.org/10.1039/D0EE02875D
Link: https://pubs.rsc.org/en/content/articlelanding/2020/ee/d0ee02875d
본 사이트는 IE 상위버전에 최적화 되어있습니다.