RT Journal Article
T1 Comparative Performance of Citrate, Borohydride, Hydroxylamine and β-Cyclodextrin Silver Sols for Detecting Ibuprofen and Caffeine Pollutants by Means of Surface-Enhanced Raman Spectroscopy.
A1 Lemos de Souza, Michele
A1 Otero-Fernández-de-Molina, Juan Carlos
A1 López-Tocón, Isabel
K1 Agua - Contaminación
K1 Espectroscopía Raman
K1 Toxicología acuática
K1 Ibuprofeno
K1 Cafeína
AB The detection of emerging contaminants in the aquatic environment, such as ibuprofen and caffeine, was studied by means of surface-enhanced Raman spectroscopy (SERS) using Ag nanoparticles (AgNPs) synthesized with β-cyclodextrin (βCD) as a reducing agent. The effect on the SERS signal of different molar ratios of Ag+/βCD in the synthesis route and the aging process of AgNPs were investigated by using trans-cinnamic as a test molecule. The SERS effectiveness of these β-cyclodextrin colloids (Ag@βCD) was also checked and compared with that of other silver sols usually employed in SERS synthesized by using other reducing agents such as citrate, borohydride and hydroxylamine. All the synthesized SERS substrates were characterized by different techniques. The experimental results indicate that Ag@βCD with the more diluted Ag+/βCD molar ratio showed the best SERS signal, enabling detection at trace concentrations of 0.5 µM in the case of trans-cinnamic acid. The Ag@βCD sols also showed the best sensitivity for detecting ibuprofen and caffeine, reaching the lowest limit of detection (0.1 mM). The proposed synthetic route for Ag@βCD sols provides an improved SERS substrate for detecting organic pollutants with better performance than other standard silver sols.
PB MDPI
YR 2020
FD 2020-11-25
LK https://hdl.handle.net/10630/38578
UL https://hdl.handle.net/10630/38578
LA eng
NO Souza, M.L.d.; Otero, J.C.; López-Tocón, I. Comparative Performance of Citrate, Borohydride, Hydroxylamine and β-Cyclodextrin Silver Sols for Detecting Ibuprofen and Caffeine Pollutants by Means of Surface-Enhanced Raman Spectroscopy. Nanomaterials 2020, 10, 2339. https://doi.org/10.3390/nano10122339
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 23 ene 2026