The effect of Eu doping on the growth, structure and red-ox activity of ceria nanocubes

被引：24

作者：

Bezkrovnyi, Oleksii ^{[1
]}

Malecka, Malgorzata A. ^{[1
]}

Lisiecki, Radoslaw ^{[1
]}

Ostroushko, Volodymyr ^{[2
]}

Thomas, Andrew G. ^{[3
,4
]}

Gorantla, Sandeep ^{[5
]}

Kepinski, Leszek ^{[1
]}

机构：

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

[2] NSC Kharkov Inst Phys & Technol, Kharkov, Ukraine

[3] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

[4] Univ Manchester, Photon Sci Inst, Manchester M13 9PL, Lancs, England

[5] Wroclaw Res Ctr EIT, Wroclaw, Poland

来源：

CRYSTENGCOMM | 2018年 / 20卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

ORIENTED-ATTACHMENT; SOLID-SOLUTIONS; NANOPARTICLES; NANOCRYSTALS; CATALYSTS; SEGREGATION; MECHANISMS; MORPHOLOGY; NANORODS; BEHAVIOR;

D O I：

10.1039/c8ce00155c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ce1-xEuxO2 nanocubes, with maximum Eu content x = 0.4, were synthesized by a simple hydrothermal method. Application of various experimental techniques (SEM-EDS, STEM-EDS, XPS, ICP-AES) revealed a uniform distribution of Eu and Ce in the nanocubes, but some oxygen depletion near the surface was detected. A model explaining the effect of the Eu doping on the growth of ceria nanocubes by the oriented attachment mechanism is proposed. The oxygen vacancy ordering in high-doped (x 0.1) ceria nanoparticles was found, and its effect on the reduction of ceria nanocubes is discussed.

引用

页码：1698 / 1704

页数：7

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