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Composite nanomaterialsComposite nanomaterials, particularly those incorporating gold, monosodium titanates and titanium dioxide, hold substantial promise for detecting radionuclides using Surface-Enhanced Raman Spectroscopy (SERSSERS). This study outlines the synthesis of two key nanostructures, i.e., gold-titanium dioxide core–shell nanorods and gold nanostarsNanostars on monosodium titanate (MST), designed for enhanced radionuclideRadionuclides sensing sensing and surface interactions. The core–shell nanorods were created using a seed-mediated growth method, followed by coating with SiO2 and TiO2 layers, which demonstrated excellent control over morphology and optical properties through UV–Vis spectroscopy and EDSEnergy Dispersion Spectroscopy (EDS) mapping. Meanwhile, MST-supported gold nanostarsNanostars synthesized via a hydrothermal approach offered superior SERSSERS capabilities due to their unique morphology and extensive surface area. Sorption experiments with radioactive strontium and plutonium simulant waste solutions revealed that these compositesComposite enhance metal removal efficiency, with specific SERSSERS signals corresponding to unique Raman fingerprints of the radionuclides, facilitating accurate detection and quantification in contaminated environments. This research study reflects the potential of tailored composite nanomaterialsComposite nanomaterials in field-deployable and cost-effective detection systems for crucial environmental and safety applications.

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Advanced Radionuclide Detection Using Composite Nanomaterials and Surface-Enhanced Raman Spectroscopy

  • 会议论文

  • 发表日期：

    2026年

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  • Simona E. Hunyadi Murph,
  • Kathryn Taylor-Pashow,
  • Fernando Fondeur

摘要

Composite nanomaterialsComposite nanomaterials, particularly those incorporating gold, monosodium titanates and titanium dioxide, hold substantial promise for detecting radionuclides using Surface-Enhanced Raman Spectroscopy (SERSSERS). This study outlines the synthesis of two key nanostructures, i.e., gold-titanium dioxide core–shell nanorods and gold nanostarsNanostars on monosodium titanate (MST), designed for enhanced radionuclideRadionuclides sensing sensing and surface interactions. The core–shell nanorods were created using a seed-mediated growth method, followed by coating with SiO2 and TiO2 layers, which demonstrated excellent control over morphology and optical properties through UV–Vis spectroscopy and EDSEnergy Dispersion Spectroscopy (EDS) mapping. Meanwhile, MST-supported gold nanostarsNanostars synthesized via a hydrothermal approach offered superior SERSSERS capabilities due to their unique morphology and extensive surface area. Sorption experiments with radioactive strontium and plutonium simulant waste solutions revealed that these compositesComposite enhance metal removal efficiency, with specific SERSSERS signals corresponding to unique Raman fingerprints of the radionuclides, facilitating accurate detection and quantification in contaminated environments. This research study reflects the potential of tailored composite nanomaterialsComposite nanomaterials in field-deployable and cost-effective detection systems for crucial environmental and safety applications.