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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Oxygen-Induced Thermal Faceting of Pd Nanosized Crystals
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Oxygen-Induced Thermal Faceting of Pd Nanosized Crystals

机译:氧诱导的Pd纳米晶体的热刻面

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摘要

The oxygen-induced faceting of [111] and [100] oriented Pd nanosized crystals ("tips") was studied by field ion microscopy (FIM). Annealing at temperatures of 500 K in the presence of submonolayer amounts of oxygen caused major reconstruction to occur. Regions of the (100} plane broke up into small (100), (112), and (012) facets. In addition, only (111) and significantly enlarged (011) facets occurred at the surface of the reconstructed Pd crystal. The faceting behavior is in accordance with recently calculated equilibrium shapes of Pd crystals in the presence of small amounts of adsorbed oxygen.
机译:通过场离子显微镜(FIM)研究了[111]和[100]取向的Pd纳米晶体(“尖端”)的氧诱导刻面。在亚单层量的氧气存在下,在500 K的温度下进行退火会导致发生重大的重建。 (100}平面区域分解成小的(100),(112)和(012)小面,此外,在重建的Pd晶体表面仅出现(111)和显着扩大的(011)小面。刻面行为与最近在少量吸附氧存在下计算出的Pd晶体的平衡形状相一致。

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