Version 1
: Received: 20 May 2024 / Approved: 21 May 2024 / Online: 21 May 2024 (04:57:36 CEST)
How to cite:
Visbal, C. A.; Cervantes, W. R.; Marín, L.; Betancourt, J.; Pérez, A.; Diosa, J. E.; Rodríguez, L. A.; Mosquera-Vargas, E. Fabrication of Gold Nanostructures as SERS Substrates for the Detection of Rhodamine B Contaminant in Water. Preprints2024, 2024051339. https://doi.org/10.20944/preprints202405.1339.v1
Visbal, C. A.; Cervantes, W. R.; Marín, L.; Betancourt, J.; Pérez, A.; Diosa, J. E.; Rodríguez, L. A.; Mosquera-Vargas, E. Fabrication of Gold Nanostructures as SERS Substrates for the Detection of Rhodamine B Contaminant in Water. Preprints 2024, 2024051339. https://doi.org/10.20944/preprints202405.1339.v1
Visbal, C. A.; Cervantes, W. R.; Marín, L.; Betancourt, J.; Pérez, A.; Diosa, J. E.; Rodríguez, L. A.; Mosquera-Vargas, E. Fabrication of Gold Nanostructures as SERS Substrates for the Detection of Rhodamine B Contaminant in Water. Preprints2024, 2024051339. https://doi.org/10.20944/preprints202405.1339.v1
APA Style
Visbal, C. A., Cervantes, W. R., Marín, L., Betancourt, J., Pérez, A., Diosa, J. E., Rodríguez, L. A., & Mosquera-Vargas, E. (2024). Fabrication of Gold Nanostructures as SERS Substrates for the Detection of Rhodamine B Contaminant in Water. Preprints. https://doi.org/10.20944/preprints202405.1339.v1
Chicago/Turabian Style
Visbal, C. A., Luis A. Rodríguez and Edgar Mosquera-Vargas. 2024 "Fabrication of Gold Nanostructures as SERS Substrates for the Detection of Rhodamine B Contaminant in Water" Preprints. https://doi.org/10.20944/preprints202405.1339.v1
Abstract
Gold nanostructures (AuNSs) were used to fabricate surface-enhanced Raman spectroscopy (SERS) substrates. These AuNSs were produced by the solid-state dewetting method from thin films. The fragmentation process was studied at 300 °C, considering the duration of the thermal treatment for 1, 3, 6, and 12 hours. These SERS substrates were then employed to detect Rhodamine B (RhB) as a model analyte, simulating a contaminant in water at a concentration of 5 ppm. The morphology of the AuNSs was examined using SEM, which revealed a spheroidal shape beginning to coalesce after 12 hours. The size of the AuNSs was estimated to range from 22 ± 7 to 24 ± 6 nm, depending on the annealing time. The surface plasmon resonance of the AuNSs was determined using absorption spectroscopy, showing a shift as the annealing time increased. The SERS signals of RhB adsorbed on the AuNS substrates were studied, and a comparative analysis showed no significant differences in the positions of the bands; however, variations in intensity enhancement ranged from 20 to 90 times for 6 and 3 hours, respectively. Three new vibrational modes, observed at 1683, 1720, and 1789 cm–1, have been identified and reported.
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
,
,
,
,
,
