Khataee, AlirezaKayan, BerkantGholami, PeymanKalderis, DimitriosAkay, Sema13.07.20192019-07-2913.07.20192019-07-2920171350-41771873-2828https://doi.org/10.1016/j.ultsonch.2017.04.018https://hdl.handle.net/20.500.12451/5647TiO2-biochar (TiO2-BC) nanocomposite was synthesized by sol-gel method. The characteristics of the prepared nanocomposite were examined using X-ray fluorescence, scanning electron microscopy, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy and N-2 adsorption-desorption analysis. The performance of synthesized TiO2-BC nanocomposite as efficient sonocatalyst was studied for the degradation of Reactive Blue 69 (RB69). Sonocatalytic degradation of RB69 in the presence of TiO2-BC nanocomposite could be explained by the mechanisms of hot spots and sonoluminescence. The optimized values for main operational parameters were determined as pH of 7, TiO2-BC dosage of 1.5 g/L, RB69 initial concentration of 20 mg/L and ultrasonic power of 300 W. Furthermore, the effect of (OH)-O-center dot, h(+) and O-2(center dot-) scavengers on the RB69 degradation efficiency was studied. Gas chromatography-mass spectroscopy analysis was used to identify intermediate compounds formed during the RB69 degradation. The results of repeated applications of TiO2-BC in the sonocatalytic process verified its stability in long-term usage.eninfo:eu-repo/semantics/embargoedAccessSonocatalystSonocatalytic DegradationTiO2 NanoparticlesTiO2-Biochar NanocompositeDye DegradationBiocharArticle3912012810.1016/j.ultsonch.2017.04.01828732928Q1WOS:000407185600014N/A