Abstract
In this research, Bi7O9I3-ZnO nanocomposite was designed via facile sono-dispersion route and influence of ultrasound power (P = 0, 100, 200, 300) was investigated. Synthesized photocatalysts were utilized for deterioration of methylene blue in water under solar light irradiation. XRD, FESEM, EDX, BET-BJH, FTIR, DRS, PL and UV–Vis were utilized to study physicochemical properties of the photocatalysts. Also, pHpzc of Bi7O9I3-ZnO (P = 300) was measured in order to research the influence of water acidity on performance of nanophotocatalyst. According to the outcomes, Bi7O9I3-ZnO (P = 300) photocatalyst with a degradation efficiency of 94.6% had highest degradation efficiency. It is associated to positive effect of ultrasound irradiation on photocatalyst activity. In fact, increasing of sonication power, not only decreased the crystallite size, relative crystallinity and total pore volume, but it also improved the dispersion of nanoparticles on the surface of photocatalyst. Several functional factors including concentrations of dye contaminant, pH and photocatalyst loading are examined.
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