Fig. 4From: Visible Light-Driven Photocatalytic Activity of Oleic Acid-Coated TiO2 Nanoparticles Synthesized from Absolute Ethanol Solution a Diffuse reflectance spectra and b Kubelka-Munk plots of various TiO2 powders. (a) TAL, (b) TAS, (c) TOS, (d) TOL, and (e) P25Back to article page