فريد اهني

This research synthesizes MoS_2/RGO nanostructures via a simple one-step hydrothermal method as an effective sonocatalyst. MoS_2/RGO has been characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM), transmission electron microscope (TEM), Raman spectrometry, Diffuse Reflectance Spectroscopy (DRS), and Fourier transform infrared spectra (FT-IR). A comprehensive study of sonocatalytic degradation efficiency of methylene blue dye in various conditions by design of experiment (DOE) is given in this paper. Hence, The response surface methodology (RSM) based on central composite design (CCD) to determine the effect of initial dye concentration, Catalyst dosage, Ultrasonic power, Sonication time, and pH is used. The reliability of this model was eva‎luated using an analysis of variance (ANOVA). We obtained a value of R2 equal to 0.996, the optimum condition with 99% degradation efficiency at 20 (mg L^(-1)) Initial MB concentration, Catalyst dosage 1 (g L^(-1)), 800 (W) Ultrasonic power, Sonication time 812.2 (S), and pH 6.15. The sonoluminescence reaction of the catalyst mechanism is hydroxyl radical OH^●. Reusability of the sonocatalyst following five sonocatalysis cycles demonstrates more than 90% degradation efficiency.

نانوذرات دي سولفيد موليبدن گرافن احياء شده , سونوكاتاليست , طراحي كامپوزيت مركزي

〖MoS〗_2/RGO nanoparticle , Sonocatalysis , Central Composite Design

Farid Ahani

Dr. Meisam Jalali