Constructing a highly sensitive SERS sensor based on necklace-like CNC/ZIF-8/Ag to detect and photo-degrade diquat in green tea leaves
Wuhan Institute of Technology · Nanjing Institute of Technology
Abstract
Surface-enhanced Raman spectroscopy (SERS) has been perceived as a valuable tool in ensuring food safety due to its rapid and intuitive nature. In this study, we demonstrate a novel cellulose-ZIF-8-noble metal nanostructure as a SERS substrate for the analysis of pesticide residues in food. Cellulose nanocrystal (CNC) acting as a scaffold, we systematically integrate ZIF-8 and Ag nanoparticles to fabricate tailored necklace-like CNC/ZIF-8/Ag core/shell nanostructures. SERS analysis reveals the CNC/ZIF-8/Ag presents an high enhancement factor of 6.39 × 10 4 , a low limit of detection (LOD) of 10 −9 mol/L, and a relative standard deviation of 10.24 % across 20 substrate batches for 4-mercaptobenzoic acid,…
Citation impact
- FWCI
- 60.82
- Percentile
- 100%
- References
- 53
Authors
6Topics & keywords
- Necklace
- Diquat
- Chemistry
- Biochemistry
- Mathematics