Institutional Repository of Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China
Galvanic-Cell-Reaction-Driven Deposition of Large-Area Au Nanourchin Arrays for Surface-Enhanced Raman Scattering | |
Li, Zhongbo1,2; Sun, Kexi3; Du, Zhaofang1; Chen, Bensong2; He, Xuan4 | |
2018-04-01 | |
发表期刊 | NANOMATERIALS |
ISSN | 2079-4991 |
摘要 | Here we report a low-cost synthetic approach for the direct fabrication of large-area Au nanourchin arrays on indium tin oxide (ITO) via a facile galvanic-cell-reaction-driven deposition in an aqueous solution of chloroauric acid and poly(vinyl pyrrolidone) (PVP). The homogeneous Au nanourchins are composed of abundant sharp nanotips, which can served as nanoantennas and increase the local electromagnetic field enhancement dramatically. Finite element theoretical calculations confirm the strong electromagnetic field can be created around the sharp nanotips and located in the nanogaps between adjacent tips of the Au nanourchins. In addition, the interparticle nanogaps between the neighboring Au nanourchins may create additional hotspots, which can induce the higher electromagnetic field intensity. By using rhodamine 6G as a test molecule, the large-area Au nanourchin arrays on ITO exhibit active, uniform, and reproducible surface-enhanced Raman scattering (SERS) effect. To trial their practical application, the Au nanourchin arrays are utilized as SERS substrates to detect 3,3',4,4'-tetrachlorobiphenyl (PCB-77) one congener of polychlorinated biphenyls (PCBs) as a notorious class of persistent organic pollutants. The characteristic Raman peaks can be still identified when the concentration of PCB-77 is down to 5 x 10(-6) M. |
关键词 | surface-enhanced Raman scattering galvanic cell reaction Au nanourchins PCBs |
DOI | 10.3390/nano8040265 |
关键词[WOS] | SHAPE-CONTROLLED SYNTHESIS ; AG ALLOY NANOURCHINS ; GOLD NANOPARTICLES ; CHEMICAL MOLECULES ; SILVER NANOCUBES ; FACILE SYNTHESIS ; AAO TEMPLATE ; SERS ; SPECTROSCOPY ; SIZE |
收录类别 | SCI |
语种 | 英语 |
资助项目 | Talent Project of Anhui Agriculture University[yj2017-12] ; National Key Basic Research Program of China[2013CB934304] ; National Natural Science Foundation of China (NSFC)[51501183] ; National Natural Science Foundation of China (NSFC)[51501183] ; National Key Basic Research Program of China[2013CB934304] ; Talent Project of Anhui Agriculture University[yj2017-12] |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
WOS类目 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
WOS记录号 | WOS:000434889100086 |
出版者 | MDPI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.hfcas.ac.cn:8080/handle/334002/36518 |
专题 | 中科院固体物理研究所 |
通讯作者 | Li, Zhongbo; Chen, Bensong |
作者单位 | 1.Anhui Agr Univ, Coll Light Text Engn & Art, Hefei 230036, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Key Lab Nanomat & Nanotechnol, Hefei 230031, Anhui, Peoples R China 3.Luoyang Normal Univ, Coll Phys & Elect Informat, Luoyang 471022, Peoples R China 4.China Acad Engn Phys, Inst Chem Mat, Mianyang 621900, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Zhongbo,Sun, Kexi,Du, Zhaofang,et al. Galvanic-Cell-Reaction-Driven Deposition of Large-Area Au Nanourchin Arrays for Surface-Enhanced Raman Scattering[J]. NANOMATERIALS,2018,8(4):12. |
APA | Li, Zhongbo,Sun, Kexi,Du, Zhaofang,Chen, Bensong,&He, Xuan.(2018).Galvanic-Cell-Reaction-Driven Deposition of Large-Area Au Nanourchin Arrays for Surface-Enhanced Raman Scattering.NANOMATERIALS,8(4),12. |
MLA | Li, Zhongbo,et al."Galvanic-Cell-Reaction-Driven Deposition of Large-Area Au Nanourchin Arrays for Surface-Enhanced Raman Scattering".NANOMATERIALS 8.4(2018):12. |
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