The 2-D growth of gold on single-layer graphene/Ru(0001): Enhancement of CO adsorption
文献类型：期刊论文
| 作者 | Liu, L ; Zhou, ZH ; Guo, QL ; Yan, Z ; Yao, YX ; Goodman, DW |
| 刊名 | SURFACE SCIENCE
 |
| 出版日期 | 2011 |
| 卷号 | 605期号:17-18页码:L47 |
| 关键词 | SCANNING-TUNNELING-MICROSCOPY CATALYTICALLY ACTIVE GOLD METAL-CLUSTERS BOND-LENGTH CATALYSIS NANOPARTICLES SIZE SPECTROSCOPY RU(0001) GRAPHENE |
| ISSN号 | 0039-6028 |
| 通讯作者 | Goodman, DW (reprint author), Texas A&M Univ, Dept Chem, POB 30012, College Stn, TX 77842 USA. |
| 中文摘要 | The growth and morphology of two-dimensional (2-D) gold islands on a single-layer graphene supported on Ru(0001) have been studied by scanning tunneling microscopy (STM). Our findings show that gold exhibits 2-D structures up to a gold dosage of 0.75 equivalent monolayers, and that these 2-D gold islands are thermally stable at room temperature. Parallel polarization modulation infrared reflection absorption spectroscopic (PM-IRAS) and high resolution electron energy loss spectroscopic (HREELS) studies indicate that carbon monoxide (CO) adsorbs on these 2-D gold islands at 85 K, showing a characteristic CO stretching feature at 2095 cm(-1) for a saturation coverage of CO. The red shift of the CO stretching frequency compared to that on charge neutral gold is consistent with electron transfer from graphene to gold, i.e., an electron-rich gold overlayer. Preliminary data obtained by dosing molecular oxygen onto this CO pre-covered surface suggest that the 2-D gold islands catalyze the oxidation of CO. (C) 2011 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | Department of Energy through the Louisiana State University Energy Frontier Research Center [DE-SC0001058]; Robert A. Welch Foundation [A-0030] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/44876]  |
| 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 | Liu, L,Zhou, ZH,Guo, QL,et al. The 2-D growth of gold on single-layer graphene/Ru(0001): Enhancement of CO adsorption[J]. SURFACE SCIENCE,2011,605(17-18):L47. |
| APA | Liu, L,Zhou, ZH,Guo, QL,Yan, Z,Yao, YX,&Goodman, DW.(2011).The 2-D growth of gold on single-layer graphene/Ru(0001): Enhancement of CO adsorption.SURFACE SCIENCE,605(17-18),L47. |
| MLA | Liu, L,et al."The 2-D growth of gold on single-layer graphene/Ru(0001): Enhancement of CO adsorption".SURFACE SCIENCE 605.17-18(2011):L47. |
入库方式： OAI收割
来源：物理研究所
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