Bismuth oxybromide/reduced graphene oxide heterostructure sensitized with Zn-tetracarboxyphthalocyanine as a highly efficient photocatalyst for the degradation of Orange II and phenol

The preparation of heterostructured photocatalysts associating BiOBr, reduced graphene oxide (rGO) and zinc tetracarboxyphthalocyanine (ZnPc(CO2H)4) their performance for the degradation Orange II dye phenol are reported. BiOBr/rGO/ZnPc(CO2H)4(0.25) photocatalyst displays a superior activity than BiOBr BiOBr/rGO, indicating that ZnPc(CO2H)4 enhances both visible light absorption charge carrier separation, which is confirmed by photoluminescence, photocurrent responses electrochemical impedance spectroscopy Nyquist plots. Scavenging experiments show main active species involved in superoxide radicals holes mechanism proposed. Due to its high stability, catalyst shows potential real environmental remediation.