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Electrodeposition of rough gold nanoarrays for surface-enhanced Raman scattering detection

文献类型：期刊论文

作者Zhu, Chuhong2; Zhao, Qiangsheng1,2,3; Huo, Dexian1,3; Hu, Xiaoye1,3; Wang, Xiujuan1,3
刊名MATERIALS CHEMISTRY AND PHYSICS
出版日期2021-04-15
卷号263
关键词Surface-roughened nanostructure Surface enhanced Raman scattering Gold Detection Electrodeposition
ISSN号0254-0584
DOI10.1016/j.matchemphys.2021.124388
通讯作者Zhu, Chuhong(chzhu@issp.ac.cn) ; Wang, Xiujuan(xjwang@issp.ac.cn)
英文摘要We report a simple electrodeposition strategy to fabricate highly surface-roughened Au nanostructure arrays grown on a silicon wafer. Finite element method simulation reveals that lots of hot spots were generated around the tips of nanothorns and in the gaps between neighboring nanothorns by both plasmon coupling and "lightning-rod" effects. It was found that roughening the as-electrodeposited Au nanocones by a subsequent secondstep electrodeposition induced a six times improvement in SERS intensity. The peak intensities of SERS spectra show a narrow distribution with a small relative standard deviation of 6.6%, confirming the high uniformity of the fabricated thorny Au nanostructure array SERS substrate. A high SERS sensitivity of the fabricated thorny Au nanostructure arrays was confirmed by a detectable concentration limit of 1 pM rhodamine 6G aqueous solutions. The SERS substrate also showed a high detection sensitivity toward ferbam with a limit of detection of about 2.40 nM. Calibration curves with a linear correlation of logarithmic SERS intensity with logarithmic concentration for R6G and 3,3',4,4'-tetrachlorobiphenyl (PCB-77, a persistent organic pollutant) were achieved by using the fabricated rough gold nanoarrays, demonstrating a promising application in semi-quantitative or even quantitative detection. This work offered a facile but effective approach toward the rational designs of uniform, reproducible and sensitive SERS substrates for molecular detection.
资助项目National Natural Science Foundation of China[21671192] ; National Natural Science Foundation of China[21577146] ; National Natural Science Foundation of China[51671186] ; Anhui Provincial Natural Science Foundation for Distinguished Young Scholar[1808085J12]
WOS研究方向Materials Science
语种英语
WOS记录号WOS:000632953900002
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation for Distinguished Young Scholar
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/121325]  
专题中国科学院合肥物质科学研究院
通讯作者Zhu, Chuhong; Wang, Xiujuan
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
2.Anhui Univ, Sch Chem & Chem Engn, Hefei 230601, Peoples R China
3.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanotechnol, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Zhu, Chuhong,Zhao, Qiangsheng,Huo, Dexian,et al. Electrodeposition of rough gold nanoarrays for surface-enhanced Raman scattering detection[J]. MATERIALS CHEMISTRY AND PHYSICS,2021,263.
APA Zhu, Chuhong,Zhao, Qiangsheng,Huo, Dexian,Hu, Xiaoye,&Wang, Xiujuan.(2021).Electrodeposition of rough gold nanoarrays for surface-enhanced Raman scattering detection.MATERIALS CHEMISTRY AND PHYSICS,263.
MLA Zhu, Chuhong,et al."Electrodeposition of rough gold nanoarrays for surface-enhanced Raman scattering detection".MATERIALS CHEMISTRY AND PHYSICS 263(2021).

入库方式： OAI收割

来源：合肥物质科学研究院

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