Thermally induced sintering and redispersion of Au nanoparticles supported on Ce1-xEuxO2 nanocubes and their influence on catalytic CO oxidation

被引：12

作者：

Bezkrovnyi, Oleksii ^{[1
]}

Kraszkiewicz, Piotr ^{[1
]}

Krivtsov, Igor ^{[2
]}

Quesada, Jorge ^{[2
]}

Ordonez, Salvador ^{[2
]}

Kepinski, Leszek ^{[1
]}

机构：

[1] Polish Acad Sci, W Trzebiatowski Inst Low Temp & Struct Res, Wroclaw, Poland

[2] Univ Oviedo, Dept Chem & Environm Engn, E-33006 Oviedo, Spain

来源：

CATALYSIS COMMUNICATIONS | 2019年 / 131卷

关键词：

Ceria nanocubes; Eu doping; Gold nanoparticles; Sintering; Redispersion; CO oxidation; GOLD; CERIA; NANOSCALE; MORPHOLOGY; PARTICLES; DEFECTS; STATES; TEM;

D O I：

10.1016/j.catcom.2019.105798

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of Eu doping of ceria nanocubes on the morphology, oxidation state of deposited Au particles and their activity in CO oxidation was studied. The decisive role of doping of ceria support with Eu in the sintering of deposited Au nanoparticles has been established and discussed for the first time. The redispersion of gold nanoparticles is responsible for the formation of small, ca. similar to 1 nm Au nanoclusters, and as a consequence the increase of the number of active sites participating in CO-oxidation reaction.

引用

页数：4

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