High Sensitive and Reusable SERS Substrate Based on Ag/SnO2 Nanocone Arrayed Thin Film

Fabrication of core–shell AuNP@UIO-66/Au nanoparticles for in situ SERS monitoring of the degradation process

“…The band vibration modes of 1074, 1170, and 1578 cm À1 were assigned to the C-S stretching vibration, coupled vibration of C-H out-of-plane bending, and amino out-of-plane bending vibrations, respectively. 26 The quantitative intensity contour plots of these three feature bands vs. the logarithm of the concentration further confirm that the bands of 4-ATP can be discriminated from the SERS spectra even at lower concentrations (Fig. 4d).…”

Surface Functionalization of Graphene Oxide with Polystyrene Sulfonic Acid Brushes to Fabricate Hierarchical Ag and Au Microstructures as SERS Substrates

“…The Raman intensity decreases with decreasing the concentration of R6G from 10 À 6 to 10 À 12 m, and it can clearly identify the main characteristic peaks until the concentration of 10 À 12 m, implying the LOD of R6G on GO-g-PSSA/Ag film is as low as 10 À 11 m. Some of the recently reported Ag-based SERS substrates have same or much higher LOD values compared to our work. [42][43][44] Although, much lesser LOD values (10 À 13 m and 10 À 16 m) are also reported, those works involve some complex synthesis or treatments. [45,46] The plot of Raman intensity of the peak at 613 cm À 1 recorded from GO-g-PSSA/Ag film versus logarithmic concentration of R6G is shown in Figure 6B.…”