The effects of 1-pentyne hydrogenation on the atomic structures of size-selected Au(N) and Pd(N) (N = 923 and 2057) nanoclusters.
The effects of 1-pentyne hydrogenation on the atomic structures of size-selected Au(N) and Pd(N) (N = 923 and 2057) nanoclusters.
复制标题
1-戊炔氢化对尺寸选定的 Au(N) 和 Pd(N)（N = 923 和 2057）纳米团簇原子结构的影响。
DOI：
10.1039/c4cp02686a
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
R. Palmer
中科院分区：
文献类型：
--
作者：
Kuo;S. Plant;P. Ellis;Christopher M Brown;P. Bishop;R. Palmer
我们研究了1-戊炔的气相加氢对非晶态碳膜负载的尺寸选择的Au和Pd纳米团簇的原子结构的影响。我们使用像差校正的高角度环形暗场(HAADF)扫描电子显微镜(STEM)以原子分辨率成像反应前后纳米团簇的布居，并通过与多切片图像模拟在整个团簇取向的比较来指定它们的原子结构。由923±20和2057±45个原子组成的金纳米团簇具有较高的结构稳定性。然而，很大一部分Pd923±26纳米团簇在处理前呈无定形状态，在反应后表现出高度对称的结构，这被解释为在反应条件下氧化的Pd纳米团簇的还原。
We report an investigation into the effects of the vapour-phase hydrogenation of 1-pentyne on the atomic structures of size-selected Au and Pd nanoclusters supported on amorphous carbon films. We use aberration-corrected high-angle annular dark field (HAADF) scanning transmission electron microscopy (STEM) to image populations of the nanoclusters at atomic resolution, both before and after the reaction, and we assign their atomic structures by comparison with multi-slice image simulations over a full range of cluster orientations. Gold nanoclusters consisting of 923 ± 20 and 2057 ± 45 atoms are found to be robust, exhibiting high structural stability. However, a significant portion of Pd923±26 nanoclusters that appear amorphous prior to treatment are found to exhibit high symmetry structures post-reaction, which is interpreted as the reduction of oxidised Pd nanoclusters under the reaction conditions.
影响因子：
15
作者：
S. M. Lang;I. Fleischer;T. Bernhardt;R. Barnett;U. Landman
通讯作者：
S. M. Lang;I. Fleischer;T. Bernhardt;R. Barnett;U. Landman