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

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...

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Bibliographic Details
Published in:Bulletin of materials science 2021-06, Vol.44 (2), p.103, Article 103
Main Authors: Bharathi, M S S, Byram, Chandu, Banerjee, D, Sarma, D, Barkakaty, B, Soma, Venugopal Rao
Format: Article
Language:English
Subjects:
Ablation
Chemical warfare
Chemistry and Materials Science
Electron microscopes
Electron microscopy
Engineering
Field emission microscopy
Gold
Lasers
Materials Science
Methylene blue
Nanofibers
Nanoparticles
Polymers
Polyvinyl alcohol
Raman spectra
Sensitivity enhancement
Substrates
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Summary: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 µM) 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 ~10%). These flexible substrates could be extended for SERS studies of various explosive and other hazardous molecules.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-021-02402-9