Novel Bi4O5I2/Bi4O5I2 hybrids: Synthesis, characterization, performance test

Bi-rich bismuth oxyhalide have a great potential in the field of photocatalysis. For improve the photocatalytic activity of Bi-rich bismuth oxyhalide, here, the Bi4O5I2/Bi4O5I2 hybrids was firstly synthesized by electrostatic self-assembly method. The photocatalytic performance was investigated by the degradation of RhB and results show that the 98.34% degradation rate could be reached by Bi4O5I2/Bi4O5I2 photocatalyst. Pure and composite materials were characterized by XRD, SEM, TEM, EDS, Mapping, UV-vis DRS and PL spectra. The enhanced photocatalytic activity was ascribed to the formation of closely heterostructure that boost the transfer and separation of holes and electrons. (C) 2019 Elsevier B.V. All rights reserved.