Atomically Precise Alkynyl-Protected Metal Nanoclusters as a Model Catalyst: Observation of Promoting Effect of Surface Ligands on Catalysis by Metal Nanoparticles
文献类型：期刊论文
| 作者 | Wang, Yu1,3; Wan, Xian-Kai1,3; Ren, Liting1,3; Su, Haifeng1,3; Li, Gang5; Malola, Sami2,4; Lin, Shuichao1,3; Tang, Zichao1,3,5; Hakkinen, Hannu2,4; Teo, Boon K.1,3 |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2016-03-16 |
| 卷号 | 138期号:10页码:3278-3281 |
| ISSN号 | 0002-7863 |
| DOI | 10.1021/jacs.5b12730 |
| 文献子类 | Article |
| 英文摘要 | Metal nanoclusters whose surface ligands are removable while keeping their metal framework structures intact are an ideal system for investigating the influence of surface ligands on catalysis of metal nanoparticles. We report in this work an intermetallic nanocluster containing 62 metal atoms, Au34Ag28(PhC= C)(34), and its use as a model catalyst to explore the importance of surface ligands in promoting catalysis. As revealed by single-crystal diffraction, the 62 metal atoms in the cluster are arranged as a four-concentric-shell Ag@ Au-17@Ag-27@Au-17 structure. All phenylalkynyl (PA) ligands are linearly coordinated to the surface Au atoms with staple "Phe C-Au-C CPh" motif. Compared with reported thiolated metal nanoclusters, the surface PA ligands on Au34Ag28(PhC C)(34) are readily removed at relatively low temperatures, while the metal core remains intact. The clusters before and after removal of surface ligands are used as catalysts for the hydrolytic oxidation of organosilanes to silanols. It is, for the first time, demonstrated that the organic-capped metal nanoclusters work as active catalysts much better than those with surface ligands partially or completely removed. |
| WOS关键词 | AEROBIC ALCOHOL OXIDATION ; GOLD CLUSTERS ; SELECTIVE HYDROGENATION ; CRYSTAL-STRUCTURE ; AU-25 CLUSTERS ; CO OXIDATION ; NANOCRYSTALS ; SIZE ; PERSPECTIVE ; RESOLUTION |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000372477700005 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/171130]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Wang, Quan-Ming; Zheng, Nanfeng |
| 作者单位 | 1.Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 2.Univ Jyvaskyla, Nanosci Ctr, Dept Chem, FI-40014 Jyvaskyla, Finland 3.Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Collaborat Innovat Ctr Chem Energy Mat, Xiamen 361005, Peoples R China 4.Univ Jyvaskyla, Nanosci Ctr, Dept Phys, FI-40014 Jyvaskyla, Finland 5.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yu,Wan, Xian-Kai,Ren, Liting,et al. Atomically Precise Alkynyl-Protected Metal Nanoclusters as a Model Catalyst: Observation of Promoting Effect of Surface Ligands on Catalysis by Metal Nanoparticles[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2016,138(10):3278-3281. |
| APA | Wang, Yu.,Wan, Xian-Kai.,Ren, Liting.,Su, Haifeng.,Li, Gang.,...&Zheng, Nanfeng.(2016).Atomically Precise Alkynyl-Protected Metal Nanoclusters as a Model Catalyst: Observation of Promoting Effect of Surface Ligands on Catalysis by Metal Nanoparticles.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,138(10),3278-3281. |
| MLA | Wang, Yu,et al."Atomically Precise Alkynyl-Protected Metal Nanoclusters as a Model Catalyst: Observation of Promoting Effect of Surface Ligands on Catalysis by Metal Nanoparticles".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 138.10(2016):3278-3281. |
入库方式： OAI收割
来源：大连化学物理研究所
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