Ag-nanocubes/graphene-oxide/Au-nanoparticles composite film with highly dense plasmonic hotspots for surface-enhanced Raman scattering detection of pesticide

doi:10.1016/j.microc.2021.106090

	Ag-nanocubes/graphene-oxide/Au-nanoparticles composite film with highly dense plasmonic hotspots for surface-enhanced Raman scattering detection of pesticide
	Zhu, Chuhong 2; Zhao, Qiangsheng 2,3; Wang, Xiujuan 3; Li, Zhongbo 1; Hu, Xiaoye 3
刊名	MICROCHEMICAL JOURNAL
	2021-06-01
卷号	165
关键词	Surface enhanced Raman scattering Hotspots Plasmon Drinking water Pesticide
ISSN号	0026-265X
DOI	10.1016/j.microc.2021.106090
通讯作者	Zhu, Chuhong(chzhu@issp.ac.cn) ; Hu, Xiaoye(hxy821982@issp.ac.cn)
英文摘要	Concentration of analyte molecules on or nearby plasmonic nanostructures is crucial for sensitive SERS detection. In this paper, a functional SERS system made of Ag-nanocubes/graphene-oxide/Au-nanoparticles (Ag-NCs/ GO/Au-NPs) composite film on a hydrophobic surface is constructed for effective accumulation and thus sensitive detection of target analyte in water. High density of plasmonic hotspots are generated between Au nanoparticles-assembled film and the Ag-NCs/GO hybrid, remarkably improving SERS activity. The hydrophobic surface is used to concentrate the analyte molecules in an aqueous droplet onto the Ag-NCs/GO/Au-NPs film during the droplet drying process. The hydrophilic graphene oxide sheets can adsorb analyte molecules nearby the plasmonic nanoparticles. The corners of Ag nanocubes, and the narrow nanogaps between neighboring palsmonic nanoparticles, could provide high density of hotspots for high SERS activity. Due to the effective accumulation of analyte molecules on/nearby hotspots, sensitive SERS detection of pesticides has been realized. The fabricated SERS platform was employed to successfully detect an aqueous solution of rhodamine 6G with an ultralow concentration (0.5 pM), conforming the high SERS sensitivity. To show the potential for practical application, SERS detection of pesticides such as thiram and thiabendazole in drinking-water was realized with limits of detection (LODs) - 0.37 ppb and - 8.3 ppb respectively. The functional SERS system may have promising applications in inspection of food safety, monitoring environmental pollutants and so on.
资助项目	Anhui Provincial Natural Science Foundation[1808085 J12] ; Natural Science Foundation of China[21671192] ; Natural Science Foundation of China[51671186] ; Natural Science Foundation of China[21577146] ; Youth Innovation Promotion Association of CAS[2019436]
WOS关键词	RHODAMINE 6G ; SERS ; SPECTROSCOPY ; SILVER ; RESIDUES ; WATER ; SITE
WOS研究方向	Chemistry
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000647795800002
资助机构	Anhui Provincial Natural Science Foundation ; Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/122206]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhu, Chuhong; Hu, Xiaoye
作者单位	1.Anhui Agr Univ, Coll Light Text Engn & Art, Hefei 230036, Peoples R China 2.Anhui Univ, Sch Chem & Chem Engn, Anhui Prov Key Lab Chem Inorgan Organ Composite F, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys & Anhui Key Lab Nanomat & Nanote, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Chuhong,Zhao, Qiangsheng,Wang, Xiujuan,et al. Ag-nanocubes/graphene-oxide/Au-nanoparticles composite film with highly dense plasmonic hotspots for surface-enhanced Raman scattering detection of pesticide[J]. MICROCHEMICAL JOURNAL,2021,165.
APA	Zhu, Chuhong,Zhao, Qiangsheng,Wang, Xiujuan,Li, Zhongbo,&Hu, Xiaoye.(2021).Ag-nanocubes/graphene-oxide/Au-nanoparticles composite film with highly dense plasmonic hotspots for surface-enhanced Raman scattering detection of pesticide.MICROCHEMICAL JOURNAL,165.
MLA	Zhu, Chuhong,et al."Ag-nanocubes/graphene-oxide/Au-nanoparticles composite film with highly dense plasmonic hotspots for surface-enhanced Raman scattering detection of pesticide".MICROCHEMICAL JOURNAL 165(2021).