Growth Mechanism of Metal Clusters on a Graphene/Ru(0001) Template

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	Growth Mechanism of Metal Clusters on a Graphene/Ru(0001) Template
	Zhang, LZ ; Du, SX ; Sun, JT ; Huang, L ; Meng, L ; Xu, WY ; Pan, LD ; Pan, Y ; Wang, YL ; Hofer, WA ; Gao, HJ
刊名	ADVANCED MATERIALS INTERFACES
	2014
卷号	1 期号:3
ISSN号	2196-7350
通讯作者	Du, SX (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China.
中文摘要	Using first-principles calculations combined with scanning tunneling microscopy experiments, we investigated the adsorption configurations, electronic structures and the corresponding growth mechanism of several transition metal (TM) atoms (Pt, Ru, Ir, Ti, Pd, Au, Ag, and Cu) on a graphene/Ru(0001) moire template (G/Ru(0001)) at low coverage. We find that Pt, Ru, Ir, and Ti selectively adsorb on the fcc region of G/Ru(0001) and form ordered dispersed metal nanoclusters. This behavior is due to the unoccupied d orbital of the TM atoms and the strong sp(3) hybridization of carbon atoms in the fcc region of G/Ru(0001). Pd, Au, Ag, and Cu form nonselective structures because of the fully occupied d orbital. This mechanism can be extended to metals on a graphene/Rh(111) template. By using Pt as an example, we provide a layer by layer growth path for Pt nanoclusters in the fcc region of the G/Ru(0001). The simulations of growth mechanism agree well with the experimental observations. Moreover, they also provide guidance for the selection of suitable metal atoms to form ordered dispersed metal nanoclusters on similar templates.
资助信息	Natural Science Foundation of China (NSFC); MOST 973 projects of China; Chinese Academy of Sciences (CAS), Shanghai Supercomputer Center
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/58843]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Zhang, LZ,Du, SX,Sun, JT,et al. Growth Mechanism of Metal Clusters on a Graphene/Ru(0001) Template[J]. ADVANCED MATERIALS INTERFACES,2014,1(3).
APA	Zhang, LZ.,Du, SX.,Sun, JT.,Huang, L.,Meng, L.,...&Gao, HJ.(2014).Growth Mechanism of Metal Clusters on a Graphene/Ru(0001) Template.ADVANCED MATERIALS INTERFACES,1(3).
MLA	Zhang, LZ,et al."Growth Mechanism of Metal Clusters on a Graphene/Ru(0001) Template".ADVANCED MATERIALS INTERFACES 1.3(2014).