Growth and characterization of Au, Ni and Au-Ni nanoclusters on 6H-SiC(0001) carbon nanomesh
文献类型：期刊论文
| 作者 | Wang, Zhou-jun; Fu, Qiang; Wang, Zhen; Bao, Xinhe |
| 刊名 | surface science
 |
| 出版日期 | 2012-08-01 |
| 卷号 | 606期号:15-16页码:1313-1322 |
| 关键词 | Gold Nickel Silicon carbide Nucleation Thermal stability Bimetallic catalyst |
| 产权排序 | 1,1 |
| 通讯作者 | 傅强 ; 包信和 |
| 英文摘要 | the nucleation and thermal stability of au. ni, and au-ni nanoclusters on 6h-sic(0001) carbon nanomesh as well as the interaction between au-ni bimetallic clusters and reactive gases have been studied by x-ray photoelectron spectroscopy (xps) and scanning tunneling microscopy (stm). both au and ni atoms grow as three-dimensional (3d) clusters. annealing the au/carbon nanomesh surface up to 1150 degrees c leads to complete desorption of the au clusters, while interfacial reaction occurs between ni clusters and the substrate surface when the ni clusters are subjected to the same annealing process. the nucleation of au-ni clusters depends critically on the deposition sequence. au atoms preferentially nucleate on the existing ni clusters, leading to the formation of bimetallic clusters with au enriched on the surface. if the deposition sequence is reversed, a part of ni atoms nucleate between the au clusters. the thermal stability of the au-ni clusters resembles that of the ni/carbon nanomesh surface, irrespective of the deposition sequence. xps characterization reveals that ni atoms in au-ni bimetallic clusters are oxidized upon exposure to 5.0 x 10(-7) mbar o-2 for 5 min at room temperature while negligible structure change can be detected when the bimetallic clusters are exposed to co gas under the similar conditions. (c) 2012 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical ; physics, condensed matter |
| 研究领域[WOS] | chemistry ; physics |
| 关键词[WOS] | co oxidation ; surface alloy ; nanoparticle catalysts ; bimetallic catalysts ; clusters ; adsorption ; reactivity ; au(111) ; support ; films |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000305845600033 |
| 公开日期 | 2013-10-11 |
| 源URL | [http://159.226.238.44/handle/321008/117830]  |
| 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 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Zhou-jun,Fu, Qiang,Wang, Zhen,et al. Growth and characterization of Au, Ni and Au-Ni nanoclusters on 6H-SiC(0001) carbon nanomesh[J]. surface science,2012,606(15-16):1313-1322. |
| APA | Wang, Zhou-jun,Fu, Qiang,Wang, Zhen,&Bao, Xinhe.(2012).Growth and characterization of Au, Ni and Au-Ni nanoclusters on 6H-SiC(0001) carbon nanomesh.surface science,606(15-16),1313-1322. |
| MLA | Wang, Zhou-jun,et al."Growth and characterization of Au, Ni and Au-Ni nanoclusters on 6H-SiC(0001) carbon nanomesh".surface science 606.15-16(2012):1313-1322. |
入库方式： OAI收割
来源：大连化学物理研究所
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