Institutional Repository of Chinese Acad Sci, Inst Solid State Phys， Hefei 230031, Anhui, Peoples R China
| Large-scale uniform Ag-NW tip array with enriched sub-10-nm gaps as SERS substrate for rapid determination of trace PCB77 | |
Xu, Wei1,2; Meng, Guowen1,2,3 ; Huang, Qing4; Hu, Xiaoye1,2; Huang, Zhulin1,2; Tang, Haibin1,2; Zhang, Junxi1,2
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| 2013-04-15 | |
| 发表期刊 | APPLIED SURFACE SCIENCE
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| 摘要 | Ag-nanowire (Ag-NW) tip arrays with high density sub-10-nm gaps have been achieved via anodic aluminum oxide (AAO) template-assistant approach, and exhibit superior surface enhanced Raman scattering (SERS) performance. The Ag-NW tip arrays were fabricated via the following procedures. Firstly, the pore walls of the AAO were thinned to the sub-10-nm scale, and then a layer of Ag thin film was deposited on the AAO via silver mirror reaction. Subsequently, a layer of gold (Au) film was coated on the Ag film via ion-beam evaporation to serve as the electrode for the electrodeposition growth of Ag-NWs. Finally, the Ag-NW tip arrays with sub-10-nm gaps were exposed from the AAO template by physical milling and a subsequent chemical etching. The SERS activity of the as-fabricated substrate is verified by measuring the probe molecules of R6G and polychlorinated biphenyls (PCBs). To further improve the detection sensitivity for PCBs, the substrate was modified with beta-cyclodextrin to increase its efficiency of capturing PCBs molecules. As a result, the as-fabricated SERS substrate can be utilized to measure trace 3,3',4,4'-tetrachlorinated biphenyls (PCB77) with a concentration as low as 1 x 10(-10) M. (C) 2013 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 关键词 | Sub-10-nm Hot Spots Surface Enhanced Raman Scattering Trace Determination Polychlorinated Biphenyls |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 学科领域 | 纳米科技与材料物理 |
| DOI | 10.1016/j.apsusc.2013.01.144 |
| 关键词[WOS] | ENHANCED RAMAN-SPECTROSCOPY ; HOT-SPOTS ; SCATTERING ; NANOSTRUCTURES ; SILVER |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| WOS类目 | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| WOS记录号 | WOS:000316787400018 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/10432 |
| 专题 | 中科院固体物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mat Phys, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China 2.Chinese Acad Sci, Anhui Key Lab Nanomat & Nanostruct, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Biotechnol & Agr Engn, Key Lab Ion Beam Bioengn, Hefei 230031, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Wei,Meng, Guowen,Huang, Qing,et al. Large-scale uniform Ag-NW tip array with enriched sub-10-nm gaps as SERS substrate for rapid determination of trace PCB77[J]. APPLIED SURFACE SCIENCE,2013,271:125-130. |
| APA | Xu, Wei.,Meng, Guowen.,Huang, Qing.,Hu, Xiaoye.,Huang, Zhulin.,...&Zhang, Junxi.(2013).Large-scale uniform Ag-NW tip array with enriched sub-10-nm gaps as SERS substrate for rapid determination of trace PCB77.APPLIED SURFACE SCIENCE,271,125-130. |
| MLA | Xu, Wei,et al."Large-scale uniform Ag-NW tip array with enriched sub-10-nm gaps as SERS substrate for rapid determination of trace PCB77".APPLIED SURFACE SCIENCE 271(2013):125-130. |
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