Performance and Shelf-Life of Electrospun Ag-doped WO3 Nanofiber-Based SERS Substrates

Recent advances in Ag-doped WO3 nanofibers have provided an opportunity to fabricate high quality and low-cost surface-enhanced Raman scattering (SERS) substrates. This work studied the performance and shelf-life of Ag-doped WO3 nanofiber-based substrates. Methylene blue (MB) molecules were used as...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-02, Vol.1070 (1), p.12004
Main Authors: Juntaracena, Komkrit, Yuangkaew, Tienthong, Horpratum, Mati, Triroj, Napat, Jaroenapibal, Papot
Format: Article
Language:English
Subjects:
Methylene blue
Nanofibers
Nanoparticles
Raman spectra
Room temperature
Shelf life
Silver
Substrates
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Summary:Recent advances in Ag-doped WO3 nanofibers have provided an opportunity to fabricate high quality and low-cost surface-enhanced Raman scattering (SERS) substrates. This work studied the performance and shelf-life of Ag-doped WO3 nanofiber-based substrates. Methylene blue (MB) molecules were used as analytical references. The prepared substrates were stored in ambient air at room temperature for the duration of 12 months. The Raman enhancement factor (EF) of freshly prepared sample was calculated to be 6.2 × 105. In the first 6 months, a small decrease in EF was observed. The EF was found to significantly decrease after samples were stored for 12 months. After 12 months, the relative standard deviations (RSD) of Raman signals changed from 10.35% to 50.29%, indicating non-uniform Raman enhancements at different locations of the sample. These suggested agglomerations of Ag nanoparticles, which deteriorated the Raman enhancement effect, after samples were stored for a prolonged period.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1070/1/012004