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

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The effect of Eu doping on the growth, structure and red-ox activity of ceria nanocubes†
CrystEngComm ( IF 2.6 ) Pub Date : 2018-02-21 00:00:00 , DOI: 10.1039/c8ce00155c
Oleksii Bezkrovnyi _{1,

2,

3} , Małgorzata A. Małecka _{1,

2,

3} , Radoslaw Lisiecki _{1,

2,

3} , Volodymyr Ostroushko _{4,

5,

6} , Andrew G. Thomas _{7,

8,

9} , Sandeep Gorantla _{2,

3,

10} , Leszek Kepinski _{1,

2,

3}

Affiliation

Ce_1–xEu_xO₂ 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.

中文翻译：

Eu掺杂对二氧化铈纳米立方体的生长，结构和氧化还原活性的影响†

通过简单的水热法合成了最大Eu含量x = 0.4的Ce _{1– x} Eu _x O ₂纳米立方体。各种实验技术（SEM-EDS，STEM-EDS，XPS，ICP-AES）的应用表明，Eu和Ce在纳米立方体中分布均匀，但是在表面附近检测到一些氧耗竭。提出了通过定向附着机理解释Eu掺杂对二氧化铈纳米晶生长的影响的模型。在高掺杂的氧空位排序（X ≥0.1）被发现二氧化铈纳米颗粒，并讨论了其上的氧化铈纳米立方体的降低效果。

更新日期：2018-02-21

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