Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles
This investigation analyzes the impact of a laser pulse energy set at 700 millijoules per pulse on silver, gold, and silver@gold nanoparticles deposited onto porous silicon (PS). Our primary objective is to discern optimal conditions by comprehensively evaluating their influence on structural, elect...
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| Format: | Article |
| Language: | English |
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University of Technology, Baghdad
2024-02-01
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| Series: | Journal of Applied Sciences and Nanotechnology |
| Subjects: | |
| Online Access: | https://jasn.uotechnology.edu.iq/article_24088_01ff2e2f587a0eb92bd44312b6c4a19f.pdf |
| _version_ | 1827318815364481024 |
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| author | Yasamen Khadim Uday Nayef Falah Mutlak |
| author_facet | Yasamen Khadim Uday Nayef Falah Mutlak |
| author_sort | Yasamen Khadim |
| collection | DOAJ |
| description | This investigation analyzes the impact of a laser pulse energy set at 700 millijoules per pulse on silver, gold, and silver@gold nanoparticles deposited onto porous silicon (PS). Our primary objective is to discern optimal conditions by comprehensively evaluating their influence on structural, electrical, morphological, and optical characteristics. Employing pulsed laser ablation in liquid, an Nd:YAG laser featuring a 10-nanosecond pulse width and a 1064 nm wavelength is utilized for nanoparticle creation. X-ray diffraction analysis (XRD) is employed to affirm the crystalline growth of core-shell nanoparticles, with distinct peaks in the data confirming the presence of both Au and Ag nanoparticles. Morphological analysis reveals a robust attachment between the nanoparticles and the porous silicon layer, indicating structural stability. The UV–vis spectra exhibit a localized surface plasmon resonance (LSPR) band within the 412–521 nm range. Notably, with an increase in gold concentration, the two peaks of the LSPR band converge into a singular peak. Comparison of the photoluminescence emission spectra of the PS substrate and NPs/PS demonstrates a significant broadening of the emission band in PS, indicative of high-quality porous silicon structure. The intriguing characteristics of Ag@Au NPs make them promising for application in gas sensor systems. |
| first_indexed | 2024-04-25T00:08:09Z |
| format | Article |
| id | doaj.art-7b6c4a14a2df4b5d87adeaf9b71344f8 |
| institution | Directory Open Access Journal |
| issn | 2788-6867 |
| language | English |
| last_indexed | 2024-04-25T00:08:09Z |
| publishDate | 2024-02-01 |
| publisher | University of Technology, Baghdad |
| record_format | Article |
| series | Journal of Applied Sciences and Nanotechnology |
| spelling | doaj.art-7b6c4a14a2df4b5d87adeaf9b71344f82024-03-14T04:11:38ZengUniversity of Technology, BaghdadJournal of Applied Sciences and Nanotechnology2788-68672024-02-014191810.53293/jasn.2023.7137.125224088Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic NanoparticlesYasamen Khadim0Uday Nayef1Falah Mutlak2Department of Applied Sciences, University of Technology – IraqDepartment of Applied Sciences, University of Technology – IraqDepartment of Physics, College of Science, University of Baghdad – IraqThis investigation analyzes the impact of a laser pulse energy set at 700 millijoules per pulse on silver, gold, and silver@gold nanoparticles deposited onto porous silicon (PS). Our primary objective is to discern optimal conditions by comprehensively evaluating their influence on structural, electrical, morphological, and optical characteristics. Employing pulsed laser ablation in liquid, an Nd:YAG laser featuring a 10-nanosecond pulse width and a 1064 nm wavelength is utilized for nanoparticle creation. X-ray diffraction analysis (XRD) is employed to affirm the crystalline growth of core-shell nanoparticles, with distinct peaks in the data confirming the presence of both Au and Ag nanoparticles. Morphological analysis reveals a robust attachment between the nanoparticles and the porous silicon layer, indicating structural stability. The UV–vis spectra exhibit a localized surface plasmon resonance (LSPR) band within the 412–521 nm range. Notably, with an increase in gold concentration, the two peaks of the LSPR band converge into a singular peak. Comparison of the photoluminescence emission spectra of the PS substrate and NPs/PS demonstrates a significant broadening of the emission band in PS, indicative of high-quality porous silicon structure. The intriguing characteristics of Ag@Au NPs make them promising for application in gas sensor systems.https://jasn.uotechnology.edu.iq/article_24088_01ff2e2f587a0eb92bd44312b6c4a19f.pdfsilver@goldgas sensorporous siliconlaser ablation |
| spellingShingle | Yasamen Khadim Uday Nayef Falah Mutlak Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles Journal of Applied Sciences and Nanotechnology silver@gold gas sensor porous silicon laser ablation |
| title | Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles |
| title_full | Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles |
| title_fullStr | Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles |
| title_full_unstemmed | Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles |
| title_short | Enhancing Gas Sensing Performance through Laser Ablation Characterization of Silver@Gold Bimetallic Nanoparticles |
| title_sort | enhancing gas sensing performance through laser ablation characterization of silver gold bimetallic nanoparticles |
| topic | silver@gold gas sensor porous silicon laser ablation |
| url | https://jasn.uotechnology.edu.iq/article_24088_01ff2e2f587a0eb92bd44312b6c4a19f.pdf |
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