Development of Bismuth Oxyhalides for Organic Pollutant Photodegradation and Water Oxidation: Effect of Synthesis Parameter and Halide Species

The development of visible-light active photocatalysts is vital to harvest the solar irradiation and build efficient photoelectrochemical devices. Bismuth oxyhalide (BiOCl, BiOBr BiOI) materials stand out due their remarkable properties, e.g., band gap energy can be tuned from 1.9 3.4 eV depends on halide employed. However, hydrothermal synthesis this material class was not properly investigated compared. Then, we evaluated effect treatment in BiOX’s structural, electronic, morphological textural properties relationship with photocatalytic performance. Methylene blue (MB) dye used as probe for performance evaluation under ultraviolet (UV) visible (Vis) radiation. BiOCl samples showed a good photoactivity both UV radiation, other hand BiOI active, likely fast charge recombination. exhibit favorably interaction MB dye, because surfaces are negatively charged. were able promote around 40 80% degradation respectively. also employed photoanode O2 evolution, sample exhibited best performance, synergistic photocatalysis electrocatalysis.