Synergistic photocatalytic effect of porous g-C3N4 in a Cr(VI)/4-chlorophenol composite pollution system

The synergistic photocatalytic effect of pg-C3N4 was studied under different pH conditions. The Cr(VI) reduction and 4-CP degradation efficiencies were both improved compared with their respective single-component photocatalytic systems. This synergistic photocatalytic effect was attributed to the accelerated redox reaction between Cr2O72− and 4-CP due to electron transfer with pg-C3N4.