Controllable fabrication of Ag-NP-decorated porous ZnO nanosheet arrays with superhydrophobic properties for high performance SERS detection of explosives

doi:10.1039/c9ce01430f

	Controllable fabrication of Ag-NP-decorated porous ZnO nanosheet arrays with superhydrophobic properties for high performance SERS detection of explosives
	He, Xuan 3; Liu, Yu 3; Liu, Yi 3; Cui, Sheng 2; Liu, Wei 3; Li, Zhongbo 1
刊名	CRYSTENGCOMM
	2020-01-28
卷号	22
ISSN号	1466-8033
DOI	10.1039/c9ce01430f
通讯作者	He, Xuan(xuan.hellen@caep.cn) ; Li, Zhongbo()
英文摘要	An efficient hydrophobic condensation surface was developed and used as an ultrasensitive surface-enhanced Raman scattering (SERS) sensor. The sensors were based on ZnO-Ag hybrid mesoporous nanosheets (MNSs) grafted on ordered Si micropillar arrays for detection of explosives. The hybrid SERS substrates were prepared via three steps: first, the ZnO seeds were precoated onto highly ordered Si micropillar arrays through atomic layer deposition; second, porous ZnO nanosheet arrays were grown based on ZnO seeds via chemical bath deposition by a secondary solvent addition method. Finally, ion-sputtering of Ag-nanoparticles (NPs) onto the ZnO MNSs was performed. Because the ordered Si micropillar arrays with a high aspect ratio provided 3D framework structures, the 3D ZnO MNSs of the Si pillar also generated three types of SERS active "hot spots". And the excellent SERS effect induced by the three different "hot spots" from 3D structures was further theoretically confirmed by simulating the electromagnetic field distributions. What's really interesting was that the prepared substrates showed superhydrophobicity. Based on the hydrophobic condensation strategy, hazardous explosives of NTO, FOX-7 were label-free detected in real samples like tap water and river water. And these samples, which were spiked with nitrophenylamine explosive TNT, were also selectively detected by secondary solvent addition under the 4-aminothiophenol (4-ATP)-modified superhydrophobic surface. Because the electronic transfer compensation effect of the hybrids ensured the stability of substrates, ZnO-Ag MNS hybrid substrates could be used for ultrasensitive detection of explosives after being stored for 49 days. Therefore, these effective SERS substrates demonstrated a promising application in forensic science and homeland security.
资助项目	Science Challenge Project[TZ2018004] ; National Natural Science Foundation of China[21502179]
WOS关键词	ENHANCED RAMAN-SCATTERING ; REVERSIBLE HOT-SPOTS ; ULTRASENSITIVE DETECTION ; SILVER NANOPARTICLES ; TRINITROTOLUENE ; NANOSTRUCTURES ; MICROSPHERES ; SUBSTRATE ; GROWTH ; LIGHT
WOS研究方向	Chemistry ; Crystallography
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000521652900019
资助机构	Science Challenge Project ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103631]
专题	中国科学院合肥物质科学研究院
通讯作者	He, Xuan; Li, Zhongbo
作者单位	1.Chinese Acad Sci, Inst Solid State Phys, Anhui Key Lab Nanomat & Nanostruct, Key Lab Mat Phys, Hefei 230031, Peoples R China 2.Nanjing Tech Univ, Jiangsu Collaborat Innovat Ctr Adv Inorgan Funct, Nanjing 210009, Peoples R China 3.China Acad Engn Phys, Inst Chem Mat, Mianyang 621900, Sichuan, Peoples R China
推荐引用方式 GB/T 7714	He, Xuan,Liu, Yu,Liu, Yi,et al. Controllable fabrication of Ag-NP-decorated porous ZnO nanosheet arrays with superhydrophobic properties for high performance SERS detection of explosives[J]. CRYSTENGCOMM,2020,22.
APA	He, Xuan,Liu, Yu,Liu, Yi,Cui, Sheng,Liu, Wei,&Li, Zhongbo.(2020).Controllable fabrication of Ag-NP-decorated porous ZnO nanosheet arrays with superhydrophobic properties for high performance SERS detection of explosives.CRYSTENGCOMM,22.
MLA	He, Xuan,et al."Controllable fabrication of Ag-NP-decorated porous ZnO nanosheet arrays with superhydrophobic properties for high performance SERS detection of explosives".CRYSTENGCOMM 22(2020).