| Popis: |
Persistent organic pollutants (POPs) such as dioxins, polychlorobiphenyls (PCBs), and polychlorinated benzene, etc. are naturally abundant and highly toxic in nature. This toxicity requires efficient, accurate, and rapid nanosensing techniques. Surface-enhanced Raman scattering (SERS), owing to its high sensitivity, simplicity, trace level, and fast detection, can provide an ideal solution. Here, functionalized gold nanoparticles (AuNP) have been studied as SERS-based nanosensors in the detection of POPs due to their surface plasmon resonance. TEM analysis was carried out to identify the different morphologies and identify the crucial “hot spots” that amplify Raman signals. POPs were identified from various real water samples rather than laboratory samples. SERS on functionalized AuNPs resulted in information-rich Raman spectra through which the PCBs were readily identified. The results obtained in this study emphasize the utilization of SERS-based nanosensors as rapid, sensitive, selective cost-effective and efficient nanosensors for detecting toxic PCBs in real environment samples. |
