期刊
ADVANCED MATERIALS INTERFACES
卷 9, 期 17, 页码 -出版社
WILEY
DOI: 10.1002/admi.202200222
关键词
iron oxide; Ostwald ripening; oxide-on-metal system; ruthenium
资金
- National Science Centre of Poland [2012/05/D/ST3/02855-granted]
- PRELUDIUM 11 [2016/21/N/ST4/00302]
- Foundation for Polish Science [TEAM/2016-2/14 (POIR.04.04.00-00-28CE/16-00)]
- European Union under the European Regional Development Fund-granted
- ICM of the Warsaw University [GB77-16 and GB82-9]
Ostwald ripening is a common physicochemical phenomenon where smaller particles dissolve and feed the bigger ones. This study provides evidence for Ostwald ripening occurring in an oxide-on-metal system, which is important for understanding heterogeneous catalysis.
Ostwald ripening is a well-known physicochemical phenomenon in which smaller particles, characterized by high surface energy, dissolve and feed the bigger ones that are thermodynamically more stable. The effect is commonly observed in solid and liquid solutions, as well as in systems consisting of supported metal clusters or liquid droplets. Here, evidence is provided for the occurrence of Ostwald ripening in an oxide-on-metal system which, in this case, consists of ultrathin iron monoxide (FeO) islands grown on Ru(0001) single-crystal support. The results reveal that the thermally-driven sintering of islands allows altering their fine structural characteristics, including size, perimeter length, defect density and stoichiometry, which are crucial, for example, from the point of view of heterogeneous catalysis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据