Effect of Gold Dispersion on the Photocatalytic Activity of Mesoporous Titania for the Vapor-Phase Oxidation of Acetone

Figure 11

Stretching C=O, C=C, C–C, and deformation CH region vibrational bands developed on sample H3 after exposure to 0.2 𝜈mol (14 𝜈mol g^-1) of acetone vapor and recorded after a delay time of 2 minutes (curve (b)) and 15 minutes (curve (c)) and subsequent raising of sample temperature to 320 K (curve (d)) and 360 K (curve (d)). Curve (a) shows corresponding vibrational bands of acetone vapor. The numbers given in the parentheses indicate the absorbance value of the particular IR band.