| Autor: |
Waldo Udos, Cheong-Weng Ooi, Kok-Sing Lim, Norazriena Yusof, May-Lee Low, Rozalina Zakaria, Wei Ru Wong, Harith Ahmad |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Results in Optics, Vol 12, Iss , Pp 100502- (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2666-9501 |
| DOI: |
10.1016/j.rio.2023.100502 |
| Popis: |
In this study, the use of a surface plasmon sensor based on a gold-coated tilted fiber Bragg grating (Au-TFBG) functionalized with graphene oxide (GO) for the detection of lead ions (Pb2+) was demonstrated. To facilitate the modification of the Au-TFBG’s gold surface, cysteamine (Cys) was employed to form a self-assembled monolayer (Cys-SAM). This step was essential for binding the GO sheets on the Au-TFBG surface via the amine functional groups of Cys. Subsequently, the GO-COOH sheets were adsorbed onto the Au-linker surfaces. The sensor’s performance was assessed using several divalent metal ions, including Pb2+, Co2+, Cd2+, Ni2+, Zn2+, and Cu2+. Notably, the sensor exhibited the highest sensitivity for Pb2+. The measured sensitivity and limit of detection (LOD) were recorded at 0.018 dB/µM and 0.711 µM, respectively. Overall, the results demonstrate the potential of the GO-Au-TFBG sensor for sensitive and selective detection of Pb2+ ions, a capability that holds significant importance in environmental monitoring and industrial applications. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
