Construction of magnetic MgFe 2 O 4 /CdS/MoS 2 ternary nanocomposite supported on NaY zeolite and highly efficient sonocatalytic degradation of organic pollutants.

In this work, the novel magnetically separable NaY zeolite/MgFe 2 O 4 /CdS nanorods/MoS 2 nanoflowers nanocomposite was successfully synthesized through the ultrasonic-assisted solvothermal approach. FESEM, EDAX, XRD, FTIR, TEM, AFM, VSM, N 2 -BET, UV-vis DRS and PL were utilized to identify the as-synthesized nanocomposite. Subsequently, the sonocatalytic activity of this nanocomposite was assessed in the degradation of organic dyes, including methylene blue (MB), rhodamine B (RhB) and methyl orange (MO) from water solutions for the first time. Several analytical parameters like irradiation time, process type, initial MB concentration, H 2 O 2 concentration, catalyst dosage, organic dye type, and US power have been systematically investigated to attain the maximum sonocatalytic yield. Regarding the acquired data, the NaY/MgFe 2 O 4 /CdS NRs/MoS 2 NFs sonocatalyst was incredibly able to completely eliminate the MB via engaging the US/H 2 O 2 system. The kinetic evaluates demonstrated the sonodegradation reactions of the MB followed a first-order model. The apparent rate constant ( k app ) and half-life time ( t 1/2 ) acquired for the sonodegradation process of MB utilizing the US/H 2 O 2 /NaY/MgFe 2 O 4 /CdS NRs/MoS 2 NFs system were measured to be 1.162 min and 0.596 min -1 , respectively. The free ˙OH radicals were also recognized as the main reactive oxygen species in the MB sonodegradation process under US irradiation. In addition, the outcomes of the recyclability study of the NaY/MgFe 2 O 4 /CdS NRs/MoS 2 NFs sonocatalytic clearly displayed a less than 6% drop of the catalytic activity in up to four sequential runs. Lastly, a plausible mechanism for the sonodegradation reaction of organic dyes was suggested and discussed.