Optimization and Characterization of Paper-based SERS Substrates for Detection of Melamine
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DOI:
https://doi.org/10.15625/0868-3166/30/0/14832Keywords:
SERS paper, silver nanostructure.Abstract
A flexible low-cost paper-based surface enhanced Raman
scattering (SERS) substrate was successfully manufactured by a direct
chemical reduction of silver nanoparticles (AgNPs) onto a common
commercially available filter paper. Characterization of fabricated
paper-based SERS substrate and the influences of the silver nitrate
concentration, type of paper on SERS signal were systematically
investigated. In order to fabricate SERS substrates with the highest
quality, a suitable one from four different types of filter papers was
chosen. The prepared SERS substrates have capability for detecting food
toxic chemicals. The test of detecting melamine in aqueous solution was
successfully demonstrated with the limit of detection for melamine is 10-7M.
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