Combination of iodine-deficient BiOI phases in the presence of CNT to enhance photocatalytic activity towards phenol decomposition under visible light

In this work, we have prepared BiOI/CNT composites by hydrothermal method and studied the impact of CNT treatment conditions (temperature time) simultaneously on phenomena such as crystallization. The samples were using X-ray Diffraction (XRD), nitrogen sorption (Brunauer–Emmett–Teller (BET) specific surface areas), Scanning Electron Microscopy assisted with Energy Dispersive X-Ray spectroscopy (SEM-EDX), High Resolution Transmission (HRTEM), UV–vis Diffuse Reflectance (DRS), Raman photoluminescence (PL). different heat treatments applied varied amount was found to a profound effect structural, morphological, compositional optical properties composites. distinguishable changes in above-mentioned clearly visible for at higher temperature longer duration (150 °C, 6.30 h). Surprisingly, presence other phases BiOI, Bi7O9I3, Bi4O5I2, Bi5O7I, also co-existed same time, although low amount. Finally, study, photocatalytic efficiency tested phenol RhB, model pollutants, under light irradiation 240 min 120 min, respectively. results revealed that showed superior performance photodegradation RhB. Additionally, performed better than their respective reference each case. Interestingly, introduction promoted crystallinity promising removal RhB achieved use power ordinary lamps.