Ostwald Ripening in an Oxide-on-Metal System

被引：11

作者：

Michalak, Natalia ^{[1
,2
]}

Ossowski, Tomasz ^{[3
]}

Milosz, Zygmunt ^{[1
]}

Prieto, Mauricio J. ^{[4
]}

Wang, Ying ^{[1
]}

Werwinski, Miroslaw ^{[2
]}

Babacic, Visnja ^{[1
]}

Genuzio, Francesca ^{[5
]}

Vattuone, Luca ^{[6
,7
]}

Kiejna, Adam ^{[3
]}

Schmidt, Thomas ^{[4
]}

Lewandowski, Mikolaj ^{[1
]}

机构：

[1] Adam Mickiewicz Univ, NanoBioMed Ctr, Wszechnicy Piastowskiej 3, PL-61614 Poznan, Poland

[2] Polish Acad Sci, Inst Mol Phys, M Smoluchowskiego 17, PL-60179 Poznan, Poland

[3] Univ Wroclaw, Inst Expt Phys, Pl M Borna 9, PL-50204 Wroclaw, Poland

[4] Max Planck Gesell, Fritz Haber Inst, Dept Interface Sci, Faradayweg 4-6, D-14195 Berlin, Germany

[5] Elettra Sincrotrone Trieste SCpA, SS 14 Km 163,5 AREA Sci Pk, I-34149 Trieste, Italy

[6] Univ Genoa, Dipartimento Fis, Via Dodecaneso 33, I-16146 Genoa, Italy

[7] UOS Genova, IMEM CNR, Via Dodecaneso 33, I-16146 Genoa, Italy

来源：

ADVANCED MATERIALS INTERFACES | 2022年 / 9卷 / 17期

关键词：

iron oxide; Ostwald ripening; oxide-on-metal system; ruthenium; ABERRATION CORRECTION; SPECTRA; FILMS;

D O I：

10.1002/admi.202200222

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页数：7

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