Instantaneous trace detection of nitro-explosives and mixtures with nanotextured silicon decorated with Ag-Au alloy nanoparticles using the SERS technique

doi:10.1016/j.aca.2019.12.026

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	Instantaneous trace detection of nitro-explosives and mixtures with nanotextured silicon decorated with Ag-Au alloy nanoparticles using the SERS technique
	S. B. Moram,A. K. Shaik,C. Byram,S. Hamad and V. R. Soma
刊名	Analytica Chimica Acta
	2020
卷号	1101 页码:157-168
ISSN号	0003-2670
DOI	10.1016/j.aca.2019.12.026
英文摘要	The development of recyclable surface enhanced Raman scattering (SERS) based sensors has been in huge demand for trace level explosives detection. A simple, hybrid Silicon (Si) nanotextured target-based SERS platform is fabricated through patterning micro square arrays (MSA) on Si using femtosecond (fs) laser ablation technique at different fluences. Using the hybrid target Si MSA substrate loaded/decorated with Ag-Au alloy NPs (obtained using femtosecond ablation in liquids) we demonstrate the trace level detection of organic nitro-explosives [picric acid (PA), 2,4-dinitrotoluene (DNT), and 1, 3, 5-trinitroperhydro-1, 3, 5-triazine (RDX)] and their mixtures. The microstructures/nanostructures of MSA fabricated at an input fluence of 9.55 J/cm(2), and decorated with Ag-Au alloy NPs, exhibited exceptional SERS enhancement factors (EFs) up to similar to 10(10) for MB, similar to 10(-)(6) for PA, and similar to 10(4) for RDX with the detection limits obtained being similar to 5 pM, similar to 36 nM, and similar to 400 nM for MB, PA and RDX respectively. Furthermore, we demonstrate these SERS substrates possess good reproducibility (RSD values < 15%) and a superior performance compared to a commercial Ag substrate (SERSitive, Poland). Three binary mixtures, i.e. MBPA, MB-DNT, PA-DNT at different concentrations, were also investigated using the same SERS substrate to test the efficacy. Further, the SERS spectra of dyes, explosives, and complex mixtures were utilized for discrimination/classification using principal component analysis. (C) 2019 Elsevier B.V. All rights reserved.
URL标识	查看原文
语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64621]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	S. B. Moram,A. K. Shaik,C. Byram,S. Hamad and V. R. Soma. Instantaneous trace detection of nitro-explosives and mixtures with nanotextured silicon decorated with Ag-Au alloy nanoparticles using the SERS technique[J]. Analytica Chimica Acta,2020,1101:157-168.
APA	S. B. Moram,A. K. Shaik,C. Byram,S. Hamad and V. R. Soma.(2020).Instantaneous trace detection of nitro-explosives and mixtures with nanotextured silicon decorated with Ag-Au alloy nanoparticles using the SERS technique.Analytica Chimica Acta,1101,157-168.
MLA	S. B. Moram,A. K. Shaik,C. Byram,S. Hamad and V. R. Soma."Instantaneous trace detection of nitro-explosives and mixtures with nanotextured silicon decorated with Ag-Au alloy nanoparticles using the SERS technique".Analytica Chimica Acta 1101(2020):157-168.