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    • M S S BHARATH

      Articles written in Bulletin of Materials Science

    • Volume 44 All articles Published: 20 April 2021 Article ID 0103

      Gold nanoparticle nanofibres as SERS substrate for detection of methylene blue and a chemical warfare simulant (methyl salicylate)

      M S S BHARATH CHANDU BYRA D BANERJEE D SARMA B BARKAKATY VENUGOPAL RAO SOMA

      More Details Abstract Fulltext PDF

      Flexible polymer (polyvinyl alcohol, PVA) nanofibres achieved with electrospinning and loaded with picosecond laser-ablated gold nanoparticles (Au NPs) were utilized as surface-enhanced Raman scattering (SERS) substrates.The fabricated polymer nanofibres and Au NPs were characterized by UV–Visible absorption, field emission scanning electron microscope, transmission electron microscopy and X-ray diffraction techniques. The PVA–Au NPs SERS substrates were used to detect the dye methylene blue (MB 5 $\mu$M) and a chemical warfare agent simulant (methyl salicylate) using a portable Raman spectrometer. The flexible PVA–Au NPs nanofibre exhibited a good sensitivity with enhancement factors of >10$^4$ and a high reproducibility (RSD$\sim$10%). These flexible substrates could be extended for SERS studies of various explosive and other hazardous molecules.

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