Mesoporous LaFeO₃: Synergistic Effect of Adsorption and Visible Light Photo-Fenton Processes for Phenol Removal from Refinery Wastewater

Figure 4

XPS spectra of (a) La 3d, (b) Fe 2p, and (c) O 1s for LFO-RHT.

(a)

(b)

(c)