Modification of screen-printed electrodes using gold nanostructures for SERS detection of low explosives
Issued Date
2025-03-01
Resource Type
ISSN
24681709
Scopus ID
2-s2.0-85213208477
Journal Title
Forensic Chemistry
Volume
42
Rights Holder(s)
SCOPUS
Bibliographic Citation
Forensic Chemistry Vol.42 (2025)
Suggested Citation
Wongpakdee T., Nacapricha D., McCord B. Modification of screen-printed electrodes using gold nanostructures for SERS detection of low explosives. Forensic Chemistry Vol.42 (2025). doi:10.1016/j.forc.2024.100636 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/102742
Title
Modification of screen-printed electrodes using gold nanostructures for SERS detection of low explosives
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Author's Affiliation
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Abstract
This study explores a novel application of surface-enhanced Raman spectroscopy (SERS) as a highly sensitive analytical tool for forensic analysis. We utilized a screen-printed gold electrode (SPGE) as a SERS active material, integrated with a portable Raman instrument for the rapid detection of low explosives. To enhance sensitivity while ensuring ease of handling, we conducted ex situ electrodeposition of gold nanostructures on the SPGE surface prior to analysis. The targeted molecules, comprising potassium nitrate (KNO3), potassium perchlorate (KClO4), sodium benzoate (C6H5COONa), diphenylamine (DPA) with its nitro derivatives, methyl centralite (MC) and ethyl centralite (EC), were studied using the proposed methodology. The developed system successfully provided distinctive SERS spectra fingerprints for low explosives (black powder, black powder substitutes, and smokeless powder) within seconds of analysis time. This approach holds promise for rapid, efficient, and accurate forensic analysis in real-world scenarios.
