Enhancement of Visible-Light Photocatalytic Activity of Mesoporous Au-TiO₂ Nanocomposites by Surface Plasmon Resonance

Figure 3

FESEM images of the Au-TiO₂ composite powders prepared with different 𝑅_Au: (a) 0, (b) 0.003, (c) 0.015, and (d) 0.060.

(a)

(b)

(c)

(d)