Synthesis and characterization of composite catalysts Cr/ZSM-5 and their effects toward photocatalytic degradation of p-nitrophenol

The photocatalytic activity of Cr incorporated ZSM-5 zeolite toward the degradation of p-nitrophenol (PNP) was well investigated at atmospheric pressure, 25 °C, with H2O2 as an oxidizing agent. The enhanced photocatalytic activity of 0.4CrZ is attributed to charge-transfer excited complex between Cr in zeolite along with PNP ligand in addition to higher surface area and high dispersion Cr in the framework comparatively. More information on local structures of metal oxides inside zeolites and their photocatalytic activities toward PNP were deduced, correlated and discussed.