Small copper clusters studied by x-ray absorption near-edge structure
Small copper clusters studied by x-ray absorption near-edge structure
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DOI：
10.1063/1.3700346
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发表时间：
2012-04
影响因子：
3.2
通讯作者：
H. Oyanagi;Z. Sun;Yousong Jiang;M. Uehara;H. Nakamura;K. Yamashita;Y. Orimoto;Ling Zhang;Chengkuo Lee;A. Fukano;H. Maeda
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文献类型：
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作者：
H. Oyanagi;Z. Sun;Yousong Jiang;M. Uehara;H. Nakamura;K. Yamashita;Y. Orimoto;Ling Zhang;Chengkuo Lee;A. Fukano;H. Maeda
采用Cu k -边x射线吸收近边结构（XANES）研究了Cu（II）六氟乙酰丙酮酸[Cu(hfac)2]在有机溶液中还原生长的铜纳米粒子的局部结构。实验XANES光谱与对照物质的比较表明，铜簇是通过与油胺的配体交换和二苯基硅烷的还原形成的。对13-135个原子组成的各种模型簇的多次散射（MS）计算表明，小（13-19个原子）的Cu簇在没有大变形的情况下是稳定的。
The local structure of copper nanoparticles grown in organic solution by reducing Cu(II) hexafluoroacetylacetonate [Cu(hfac)2] was studied as-grown by the Cu K-edge x-ray absorption near-edge structure (XANES). Comparison of the experimental XANES spectra with reference materials indicated small copper clusters are formed by ligand-exchange with oleylamine and subsequent reducing by diphenylsilane. The multiple-scattering (MS) calculation for various model clusters consisting of 13–135 atoms suggests that small (13–19 atom) Cu clusters are stabilized without a large deformation.