Dealloying Ag-Al Alloy to Prepare Nanoporous Silver as a Substrate for Surface-Enhanced Raman Scattering: Effects of Structural Evolution and Surface Modification
文献类型：期刊论文
| 作者 | Qiu, Huajun1,2; Zhang, Zhonghua3; Huang, Xirong1; Qu, Yinbo4 |
| 刊名 | CHEMPHYSCHEM
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 12期号:11页码:2118-2123 |
| 关键词 | nanoparticles Raman spectroscopy silver size effects structural evolution |
| 英文摘要 | Sensitive detection of molecules by using the surface-enhanced Raman scattering (SERS) technique depends on the nanostructured metallic substrate and many efforts have been devoted to the preparation of SERS substrates with high sensitivity, stability, and reproducibility. Herein, we report on the fabrication of stable monolithic nanoporous silver (NPS) by chemical dealloying of Ag-Al precursor alloys with an emphasis on the effect of structural evolution on SERS signals. It was found that the dealloying conditions had great influence on the morphology (the ligament/pore size) and the crystallization status, which determined the SERS signal of rhodamine 6G on the NPS. NPS with small pores, low residual Al, and perfect crystallization gave high SERS signals. A high enhancement factor of 7.5 x 10(5) was observed on bare NPS obtained by dealloying Ag(30)Al(70) in 2.5 wt% HCl at room temperature followed by 15 min aging at around 85 degrees C. After coating Ag nanoparticles on the NPS surface, the enhancement factor increased to 1.6 x 10(8) owing to strong near-field coupling between the ligaments and nanoparticles. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Chemistry ; Physics |
| 关键词[WOS] | GOLD NANOPARTICLE ARRAYS ; SPECTROSCOPY ; FILMS ; AU ; NANOSTRUCTURES ; COPPER ; SIZE ; MICROSTRUCTURE ; FABRICATION ; DEPOSITION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000293385400011 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/6749]  |
| 专题 | 青岛生物能源与过程研究所_生物传感技术团队 |
| 作者单位 | 1.Shandong Univ, Minist Educ China, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 3.Shandong Univ, Key Lab Liquid Struct & Hered Mat, Jinan 250100, Peoples R China 4.Shandong Univ, State Key Lab Microbial Technol China, Jinan 250100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiu, Huajun,Zhang, Zhonghua,Huang, Xirong,et al. Dealloying Ag-Al Alloy to Prepare Nanoporous Silver as a Substrate for Surface-Enhanced Raman Scattering: Effects of Structural Evolution and Surface Modification[J]. CHEMPHYSCHEM,2011,12(11):2118-2123. |
| APA | Qiu, Huajun,Zhang, Zhonghua,Huang, Xirong,&Qu, Yinbo.(2011).Dealloying Ag-Al Alloy to Prepare Nanoporous Silver as a Substrate for Surface-Enhanced Raman Scattering: Effects of Structural Evolution and Surface Modification.CHEMPHYSCHEM,12(11),2118-2123. |
| MLA | Qiu, Huajun,et al."Dealloying Ag-Al Alloy to Prepare Nanoporous Silver as a Substrate for Surface-Enhanced Raman Scattering: Effects of Structural Evolution and Surface Modification".CHEMPHYSCHEM 12.11(2011):2118-2123. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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