Abstract
A simple method was developed for the one-step synthesis of silver nanoparticles (AgNPs), co-stabilized by poly[N-(3-trimethoxysilylpropyl)diethylenetriamine] (PATS) and embedded on a flexible cotton swab (CS). PATS served as the capping agent for AgNPs. The flexible CS-PATS-AgNPs substrate was subjected to surface-enhanced Raman scattering (SERS) for the detection of single and multiple chemical warfare agent simulants (CWAS). SERS peak intensity versus concentration changes were rapidly detected and analyzed using a self-developed smartphone-based app system, which performs quantitative detection of the analyte. The results showed that CWAS (dimethyl methylphosphonate, DMMP; 2-chloroethylethylsulfide, 2-CEES; acetonitrile, ACN can be detected with a high sensitivity, with a limit of detection (LOD) of DMMP, 2-CEES and ACN was 1.0, 46.7 and 57.9 g/L, respectively. The flexible SERS substrate, CS-PATS-AgNPs, in conjunction with a Raman spectrometer and a smartphone-based app system, possesses practical applications primarily owing to the low cost and simple sampling technique.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
