Thermally induced reconstruction of ceria nanocubes into {111}-nanofacetted structures was investigated by XRD, TEM and Raman spectroscopy. The beneficial role of reducing atmosphere on the surface reconstruction processes was observed and is discussed. The activity of ceria nanoparticles with various surface morphology in catalytic oxidation of CO was investigated. The order of catalytic activity of the particles: smooth ceria nanocubes > {111}-nanofacetted ceria nanocubes > smooth octahedra correlates with the concentration of Ce³⁺ - oxygen vacancy pairs determined by Raman spectroscopy.

中文翻译：

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二氧化铈纳米立方体的热诱导重构为之字形{111}-纳米乙酸酯结构及其对CO氧化催化活性的影响

通过XRD，TEM和拉曼光谱研究了将二氧化铈纳米晶热诱导重建为{111}-纳米乙酸的结构。观察到并讨论了减少气氛对表面重建过程的有益作用。研究了具有不同表面形态的二氧化铈纳米颗粒在CO催化氧化中的活性。颗粒的催化活性顺序为：光滑的二氧化铈纳米立方体> {111}-纳米乙酰二氧化铈纳米立方体>光滑的八面体与通过拉曼光谱法测定的Ce ³⁺ -氧空位对的浓度相关。