Local Surface Plasmonic Resonance, Surface-Enhanced Raman Scattering, Photoluminescence, and Photocatalytic Activity of Hydrothermal Titanate Nanotubes Coated with Ag Nanoparticles

Figure 4

Sequence of MB degradation under visible light exposure of (a) starting TiO₂, (b) TNT, and (c) TNT/Ag. (d) The photodegradation collected at the characteristic MB absorption peak at 644 nm.

(a)

(b)

(c)

(d)