Instantaneous trace detection of nitro-explosives and mixtures with nanotextured silicon decorated with Ag-Au alloy nanoparticles using the SERS technique
文献类型：期刊论文
| 作者 | S. B. Moram,A. K. Shaik,C. Byram,S. Hamad and V. R. Soma |
| 刊名 | Analytica Chimica Acta
 |
| 出版日期 | 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 |
| 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. |
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