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Silver nanotriangles-loaded filter paper for ultrasensitive SERS detection application benefited by interspacing of sharp edges
Wang, C (Wang, Chong); Liu, BX (Liu, Bingxin); Dou, XC (Dou, Xincun); Dou, XC
2016
发表期刊SENSORS AND ACTUATORS B-CHEMICAL
卷号231期号:8页码:357-364
摘要The strongly enhanced electromagnetic "hotspots" from the edges and tips of nanoplates are highly preferred to significantly promote the surface enhanced Raman scattering (SERS) activity. Here, Ag nanotriangles with a sharp edge of 20 nm were prepared by the reduction of AgNO3 using N,N-Dimethylformamide (DMF) with the assistance of Polyvinyl pyrrolidone (PVP). By loading of Ag nanotriangles onto the filter paper, a flexible SERS substrate with good activity and reproducibility was obtained and the ultratrace detection of p-aminothiophenol (pATP) with a concentration as low as 10(-8) M was achieved. The sharp edges and tips boosted SERS activity was proved by the finite element method modeling of the plasmonic properties of Ag nanotriangles with different edge thicknesses (10 - 80 nm), Ag nanosheets with different tip acutances ( squares and hexagons) together with Ag nanorods, nanocubes and nanospheres. The experimental and theoretical results confirmed that the interspacing created by filter paper plays an important role in enhancing the overall SERS activity. Furthermore, it is shown that the present silver nanotriangles-loaded filter paper SERS substrate can be employed to sensitive and selective detecting ultratrace military explosives picric acid (PA) of 10(-6) M.
关键词Sers Silver Nanoparticles Explosives Detection
DOI10.1016/j.snb.2016.03.030
收录类别SCI
WOS记录号WOS:000374330900040
引用统计
被引频次:23[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.xjipc.cas.cn/handle/365002/4646
专题环境科学与技术研究室
通讯作者Dou, XC
作者单位1.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Wang, C ,Liu, BX ,Dou, XC ,et al. Silver nanotriangles-loaded filter paper for ultrasensitive SERS detection application benefited by interspacing of sharp edges[J]. SENSORS AND ACTUATORS B-CHEMICAL,2016,231(8):357-364.
APA Wang, C ,Liu, BX ,Dou, XC ,&Dou, XC.(2016).Silver nanotriangles-loaded filter paper for ultrasensitive SERS detection application benefited by interspacing of sharp edges.SENSORS AND ACTUATORS B-CHEMICAL,231(8),357-364.
MLA Wang, C ,et al."Silver nanotriangles-loaded filter paper for ultrasensitive SERS detection application benefited by interspacing of sharp edges".SENSORS AND ACTUATORS B-CHEMICAL 231.8(2016):357-364.
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