Sonocatalytic Methylene Blue in The Presence of Fe₃O₄-CuO-TiO₂ Nanocomposites Heterostructure

In this work, the emphasis was mainly placed on investigating the sonocatalytic activity of Fe₃O₄-CuO-TiO₂ nanocomposites heterostructure. The prepared samples were characterized by X-ray diffraction (XRD), Vibrating Sample Magnetometer (VSM), Brunauer-Emmett-Teller (BET) Surface Area Analysis. Methylene blue dye was selected to examine the sonocatalytic activity of Fe₃O₄-CuO-TiO₂ nanocomposites heterostructure. The degradation reaction processes were monitored by UV-vis spectrophotometer. The influence on the activity of the Fe₃O₄-CuO-TiO₂ nanocomposites heterostructure such as TiO₂ loading was studied. The sonocatalyst Fe₃O₄-CuO-TiO₂ with molar ratio of 1:1:5 showed the highest sonocatalytic activity. At last, the experiment also indicated that holes are the main reactive species in the photodegradation mechanism in methylene blue. (paper)