物理化学学报2011，Vol.27Issue(3)：513-519,7.
钯掺杂的25-原子和38-原子金纳米团簇
Doping 25-Atom and 38-Atom Gold Nanoclusters with Palladium
摘要
Abstract
In this work, we describe two synthetic procedures for preparing palladium doped 25-atom nanoclusters (referred to as Pd1Au24(SR)18, where -SR represents thiolate, R=C2H4Ph). Pure Pd1Au24 (SC2H4Ph)18 nanoclusters are isolated by solvent extraction and size exclusion chromatography. Mass spectrometry and optical spectroscopy analyses demonstrate that the Pd1Au24(SC2H4Ph)18 nanocluster adopts the same core-shell structure as that of the homogold Au25(SC2H4Ph)18 nanocluster, that is, a Pd- or Au-centered icosahedron surrounded by six Au2(SR)3 "staple"-like motifs. Similar doping behavior has also been observed in 38-atom M38(SR)24 (M: metal) nanoclusters, indicating the unique behavior of Pd dopant being preferentially located in the icosahedral center. The catalytic activity of Pd1Au24(SC2H4Ph)18 has also been evaluated for the selective hydrogenation of α,β-unsaturated ketone (e.g., benzalacetone) to α,β-unsaturated alcohol, and a 42% conversion of benzalacetone is attained.关键词
Gold/Nanocluster/Doping/PalladiumKey words
Gold/Nanocluster/Doping/Palladium引用本文复制引用
QIAN Huifeng,BARRY Ellen,ZHU Yan,JIN Rongchao..钯掺杂的25-原子和38-原子金纳米团簇[J].物理化学学报,2011,27(3):513-519,7.基金项目
The project was supported by Carnegie Mellon University (CMU),the Air Force Office of Scientific Research (AFOSR) and the National Institute for Occupational Safety and Health (NIOSH),USA.BARRY Ellen was supported by the National Science Foundation-Research Experiences for Undergraduates,USA (NSF grant DMR #1005076). （CMU）
