A split-type structure of Ag nanoparticles and Al2O3@Ag@Si nanocone arrays: an ingenious strategy for SERS-based detection

doi:10.1039/c9nr09238b

CORC > 合肥物质科学研究院 > 中国科学院合肥物质科学研究院 > 中科院固体物理研究所

	A split-type structure of Ag nanoparticles and Al2O3@Ag@Si nanocone arrays: an ingenious strategy for SERS-based detection
	Zhen Wang 3,4; Chunxue Zheng 2,3; Peng Zhang 3; Zhulin Huang 3; Chuhong Zhu 3; Xiujuan Wang 3; Xiaoye Hu 3; Jian Yan 1
刊名	Nanoscale
	2020
卷号	12
ISSN号	2040-3364
DOI	10.1039/c9nr09238b
通讯作者	Hu, Xiaoye(hxy821982@issp.ac.cn) ; Yan, Jian(yanjian@hfut.edu.cn)
英文摘要	Herein, we report a facile strategy of combined SERS measurements based on a split-type SERS substrate, which exhibits excellent SERS activity, detection signal reproducibility and chemical stability. The SERS substrate consists of an ordered Al2O3@Ag@Si nanocone array and Ag nanoparticles (Ag-NPs), both of which are fabricated individually. The Al2O3@Ag@Si nanocone array is obtained by ion-sputtering Ag on an Si nanocone array and then coating an ultrathin (2 nm) Al2O3 dielectric layer via atomic layer deposition (ALD). Ag-NPs are synthesized via the liquid phase method and then immersed in an organic solvent for liquid seal. For the SERS measurement, Ag-NPs are dispersed in a liquid containing the probe molecules and then, they self-assemble on the surface of the Al2O3@Ag@Si nanocones. Subsequently, the ultrathin Al2O3 dielectric layer separates Ag-NPs from the Ag@Si nanocones, forming massive gap-introduced hot spots. This substrate is sensitive to 1 pM Rhodamine R6G with an average enhancement factor of up to 109, exhibiting excellent SERS activity. Moreover, due to the protection of the Al2O3 dielectric layer and the organic solvent for the Ag@Si nanocones and Ag-NPs against oxidation, the split-type SERS substrate achieves an SERS signal with almost no attenuation after five months, indicating its good chemical stability.
资助项目	Natural Science Foundation of China[51671186] ; Natural Science Foundation of China[21673245] ; Natural Science Foundation of China[21671192] ; Natural Science Foundation of China[51632009] ; Natural Science Foundation of China[21577146] ; Natural Science Foundation of China[51472245] ; Anhui Provincial Natural Science Foundation for Distinguished Young Scholar[1808085J12] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-SLH046] ; CAS/SAFEA International Partnership Program for Creative Research Teams, Hefei Institutes of Physical Sciences, CAS ; Youth Innovation Promotion Association of CAS
WOS关键词	ENHANCED RAMAN-SCATTERING ; ULTRASENSITIVE DETECTION ; NANOROD ARRAYS ; GOLD ; NANOSTRUCTURES ; SPECTROSCOPY ; FABRICATION ; ASSEMBLIES ; SUBSTRATE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000531408100056
资助机构	Natural Science Foundation of China ; Anhui Provincial Natural Science Foundation for Distinguished Young Scholar ; Key Research Program of Frontier Sciences, CAS ; CAS/SAFEA International Partnership Program for Creative Research Teams, Hefei Institutes of Physical Sciences, CAS ; Youth Innovation Promotion Association of CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/42605]
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.dSchool of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, China. 2.University of Science and Technology of China, Hefei, 230026, China 3.Key Laboratory of Materials Physics, and Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences 4.bAnhui University, Hefei, 230039, China
推荐引用方式 GB/T 7714	Zhen Wang,Chunxue Zheng,Peng Zhang,et al. A split-type structure of Ag nanoparticles and Al2O3@Ag@Si nanocone arrays: an ingenious strategy for SERS-based detection[J]. Nanoscale,2020,12.
APA	Zhen Wang.,Chunxue Zheng.,Peng Zhang.,Zhulin Huang.,Chuhong Zhu.,...&Jian Yan.(2020).A split-type structure of Ag nanoparticles and Al2O3@Ag@Si nanocone arrays: an ingenious strategy for SERS-based detection.Nanoscale,12.
MLA	Zhen Wang,et al."A split-type structure of Ag nanoparticles and Al2O3@Ag@Si nanocone arrays: an ingenious strategy for SERS-based detection".Nanoscale 12(2020).