Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods
In this work, several types of plasmonic sensors were prepared by different methods (ion reduction method and wet-chemical KOH route) to detect the ultralow anti-CIPRO concentration using AgNPs/PSi SERS-active substrate with AgNPs concentration. The process was optimized to be very effective in dete...
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University of Technology, Baghdad
2025-06-01
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| Series: | Journal of Applied Sciences and Nanotechnology |
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| Online Access: | https://jasn.uotechnology.edu.iq/article_24518_6712599be03a7ff880e46e285f39e289.pdf |
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| author | Ruqaya Shlaga Alwan Alwan Mohammed Mohammed |
| author_facet | Ruqaya Shlaga Alwan Alwan Mohammed Mohammed |
| author_sort | Ruqaya Shlaga |
| collection | DOAJ |
| description | In this work, several types of plasmonic sensors were prepared by different methods (ion reduction method and wet-chemical KOH route) to detect the ultralow anti-CIPRO concentration using AgNPs/PSi SERS-active substrate with AgNPs concentration. The process was optimized to be very effective in detecting CIPRO and to have a high amplification factor (EF). For the deposition of AgNPs with a concentration of 5×10-3 M and the maximum density of hotspot areas, a nanocrystalline silicon sample prepared by the KOH method and an ion reduction technique before etching was used. We tested an AgNPs/PSi SERS substrate, which showed better performance in detecting the CIPRO antibiotic over a range of doses (10-7-10-13 M). XRD, EDX, FESEM and SERS were used to analyze the PSi samples and the AgNP/PSi chemical sensors. The results of the AgNPs/PSi SERS substrates from both methods showed that the ion reduction process was more effective in detecting the CIPRO antibiotics at their lowest concentrations. It was found that the highest EF at salt concentrations of 5×10-3M was 6.3×1012 for the pre-etching method, compared with 7.78×1010 for the KOH method under the same conditions. The results showed that the proposed AgNPs/PSi SERS substrate is an effective method to find CIPRO even at low concentrations, and that CIPRO was localized approximately near the surface. This approach is considered a revolutionary work that has the potential to modify the plasmonic properties of metallic NPs for SERS applications. |
| format | Article |
| id | doaj-art-504f7a01cff746fbab542a8e2e2820a8 |
| institution | OA Journals |
| issn | 2788-6867 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | University of Technology, Baghdad |
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| series | Journal of Applied Sciences and Nanotechnology |
| spelling | doaj-art-504f7a01cff746fbab542a8e2e2820a82025-08-20T02:23:27ZengUniversity of Technology, BaghdadJournal of Applied Sciences and Nanotechnology2788-68672025-06-0152243310.53293/jasn.2025.7488.131724518Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH MethodsRuqaya Shlaga0Alwan Alwan1Mohammed Mohammed2Department of Applied Sciences, University of Technology - Iraq, IraqDepartment of Applied Sciences, University of Technology - Iraq, IraqDepartment of Applied Sciences, University of Technology - Iraq, IraqIn this work, several types of plasmonic sensors were prepared by different methods (ion reduction method and wet-chemical KOH route) to detect the ultralow anti-CIPRO concentration using AgNPs/PSi SERS-active substrate with AgNPs concentration. The process was optimized to be very effective in detecting CIPRO and to have a high amplification factor (EF). For the deposition of AgNPs with a concentration of 5×10-3 M and the maximum density of hotspot areas, a nanocrystalline silicon sample prepared by the KOH method and an ion reduction technique before etching was used. We tested an AgNPs/PSi SERS substrate, which showed better performance in detecting the CIPRO antibiotic over a range of doses (10-7-10-13 M). XRD, EDX, FESEM and SERS were used to analyze the PSi samples and the AgNP/PSi chemical sensors. The results of the AgNPs/PSi SERS substrates from both methods showed that the ion reduction process was more effective in detecting the CIPRO antibiotics at their lowest concentrations. It was found that the highest EF at salt concentrations of 5×10-3M was 6.3×1012 for the pre-etching method, compared with 7.78×1010 for the KOH method under the same conditions. The results showed that the proposed AgNPs/PSi SERS substrate is an effective method to find CIPRO even at low concentrations, and that CIPRO was localized approximately near the surface. This approach is considered a revolutionary work that has the potential to modify the plasmonic properties of metallic NPs for SERS applications.https://jasn.uotechnology.edu.iq/article_24518_6712599be03a7ff880e46e285f39e289.pdfcipro antibioticspre-etching ion reductionkoh method |
| spellingShingle | Ruqaya Shlaga Alwan Alwan Mohammed Mohammed Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods Journal of Applied Sciences and Nanotechnology cipro antibiotics pre-etching ion reduction koh method |
| title | Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods |
| title_full | Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods |
| title_fullStr | Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods |
| title_full_unstemmed | Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods |
| title_short | Performance Comparison of Plasmonic Sensors via Ion Reduction and KOH Methods |
| title_sort | performance comparison of plasmonic sensors via ion reduction and koh methods |
| topic | cipro antibiotics pre-etching ion reduction koh method |
| url | https://jasn.uotechnology.edu.iq/article_24518_6712599be03a7ff880e46e285f39e289.pdf |
| work_keys_str_mv | AT ruqayashlaga performancecomparisonofplasmonicsensorsviaionreductionandkohmethods AT alwanalwan performancecomparisonofplasmonicsensorsviaionreductionandkohmethods AT mohammedmohammed performancecomparisonofplasmonicsensorsviaionreductionandkohmethods |