Gap-tunable Ag-nanorod arrays on alumina nanotip arrays as effective SERS substrates
文献类型：期刊论文
| 作者 | Sun, Kexi1,2; Meng, Guowen1,2,3 ; Huang, Qing4; Zhao, Xianglong1,2; Zhu, Chuhong1,2; Huang, Zhulin1,2; Qian, Yiwu1,2; Wang, Xiujuan1,2; Hu, Xiaoye1,2
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| 刊名 | JOURNAL OF MATERIALS CHEMISTRY C
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| 出版日期 | 2013 |
| 卷号 | 1期号:33页码:5015-5022 |
| DOI | 10.1039/c3tc30669k |
| 文献子类 | Article |
| 英文摘要 | Large area arrays of length-tunable alumina nanotips on the joints of hexagonally patterned conical-pores in an anodic aluminum oxide (AAO) template are achieved via a repeated process of anodizing Al foil for pore growth downwards and phosphoric acid etching for pore-widening. By top-view sputtering Ag on the alumina nanotip arrays, hexagonally patterned arrays of Ag-nanorods (Ag-NRs) on the alumina nanotips and uniformly distributed Ag-nanoparticles (Ag-NPs) on the upper rim of the inner surface of the conical-pores are obtained and they exhibit strong surface-enhanced Raman scattering (SERS) activity due to the high density of sub-10 nm gaps between the nearest neighboring Ag-NRs and between the adjacent Ag-NPs. The resultant nanostructures are tailored to attain an optimal SERS enhancement factor of similar to 3.2 x 10(7) by tuning the Ag-sputtering duration. SERS measurements demonstrate that the as-fabricated large-scale Ag-nanostructures can serve as highly sensitive and reproducible SERS substrates. Finite element method calculation also confirms that the fabricated substrates possess excellent SERS activity. By modifying the Ag-NR arrays with mono-6-thio-beta-cyclodextrin, the SERS detection limit of PCB-77 (a congener of polychlorinated biphenyls (PCBs)) reaches 10(-6) M, showing potential in SERS-based rapid detection of trace PCBs, a kind of global environmental hazardous material. |
| WOS关键词 | ENHANCED RAMAN-SCATTERING ; ORGANIZING GOLD NANOSTRUCTURES ; SUB-10 NM GAPS ; ANODIC ALUMINA ; CONTROLLED FABRICATION ; SILVER NANOPARTICLES ; NANOPILLAR ARRAYS ; SPECTROSCOPY ; PERFORMANCES ; EVOLUTION |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000322587800003 |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/22164]  |
| 专题 | 合肥物质科学研究院_中科院固体物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanostruct, Hefei 230031, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Tech Biol & Agr Engn, Key Lab Ion Beam Bioengn, Hefei 230031, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Kexi,Meng, Guowen,Huang, Qing,et al. Gap-tunable Ag-nanorod arrays on alumina nanotip arrays as effective SERS substrates[J]. JOURNAL OF MATERIALS CHEMISTRY C,2013,1(33):5015-5022. |
| APA | Sun, Kexi.,Meng, Guowen.,Huang, Qing.,Zhao, Xianglong.,Zhu, Chuhong.,...&Hu, Xiaoye.(2013).Gap-tunable Ag-nanorod arrays on alumina nanotip arrays as effective SERS substrates.JOURNAL OF MATERIALS CHEMISTRY C,1(33),5015-5022. |
| MLA | Sun, Kexi,et al."Gap-tunable Ag-nanorod arrays on alumina nanotip arrays as effective SERS substrates".JOURNAL OF MATERIALS CHEMISTRY C 1.33(2013):5015-5022. |
入库方式： OAI收割
来源：合肥物质科学研究院
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