TY - JOUR
T1 - Modification of screen-printed electrodes using gold nanostructures for SERS detection of low explosives
AU - Wongpakdee, Thinnapong
AU - Nacapricha, Duangjai
AU - McCord, Bruce
N1 - Publisher Copyright:
© 2024 Elsevier B.V.
PY - 2025/3
Y1 - 2025/3
N2 - 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.
AB - 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.
KW - Forensic
KW - Low explosive
KW - Screen-printed electrode
KW - SERS
KW - Surface-enhanced Raman spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85213208477&partnerID=8YFLogxK
U2 - 10.1016/j.forc.2024.100636
DO - 10.1016/j.forc.2024.100636
M3 - Article
AN - SCOPUS:85213208477
SN - 2468-1709
VL - 42
JO - Forensic Chemistry
JF - Forensic Chemistry
M1 - 100636
ER -