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<p>An ion reduction process of trimetallic ions of gold, silver, and palladium is utilized to incorporate a trimetallic nanoparticle (Tri_NanoPs) on boundaries of multi-walled carbon nanotubes (MWCNTs). Excellent plasmonics feature, including the high surface density of the Tri_Nanops and hot spot sites with the lowest dimensions among Tri_NanoPs, is realized by controlling the concentration of trimetallic ions. This process offers the best possibility for attaining the utmost plasmonic features for surface-enhanced Raman scattering (SERS) of Tri_NanoPs/MWCNTs flexible sensor. The topographical Raman and SERS properties of the Tri_NanoPs/MWCNTs SERS sensors have been examined using AFM, XRD, and Raman microscopy. The results showed that the Tri_Nanops on MWCNTs surface density could be modified by trimetallic ions. The lower trimetallic ions (1 mM) provide a higher improvement parameter (IP), minimum detection limit (MDL) of five orders in magnitude lower than internationally acceptable daily intake (ADI), and a great degree of reproducibility with the lowest variant of 2.75 × 10<sup>9</sup>, 10<sup>−13</sup> M, and 0.7%, respectively, due to Tri_NanoPs with a high surface density as well as hot spot sites.</p>

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Development of Flexible SERS Sensors via Trimetallic Nanoparticles/MWCNTs for Carbaryl Pecticide Detection

  • 期刊论文

  • 发表日期：

    2025年1月22日

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  • Doaa Sulaiman,
  • Layla A. Wali,
  • Alwan M. Alwan

摘要

An ion reduction process of trimetallic ions of gold, silver, and palladium is utilized to incorporate a trimetallic nanoparticle (Tri_NanoPs) on boundaries of multi-walled carbon nanotubes (MWCNTs). Excellent plasmonics feature, including the high surface density of the Tri_Nanops and hot spot sites with the lowest dimensions among Tri_NanoPs, is realized by controlling the concentration of trimetallic ions. This process offers the best possibility for attaining the utmost plasmonic features for surface-enhanced Raman scattering (SERS) of Tri_NanoPs/MWCNTs flexible sensor. The topographical Raman and SERS properties of the Tri_NanoPs/MWCNTs SERS sensors have been examined using AFM, XRD, and Raman microscopy. The results showed that the Tri_Nanops on MWCNTs surface density could be modified by trimetallic ions. The lower trimetallic ions (1 mM) provide a higher improvement parameter (IP), minimum detection limit (MDL) of five orders in magnitude lower than internationally acceptable daily intake (ADI), and a great degree of reproducibility with the lowest variant of 2.75 × 109, 10−13 M, and 0.7%, respectively, due to Tri_NanoPs with a high surface density as well as hot spot sites.