Abstract
Sonocatalysis fascinates to utilize mechanical energy that universally exists in the environment. A big problem for the practical application of sonocatalysts is the incapability of recyclability, which is necessary for resource saving and secondary pollution control. In this work, Bi7Fe2.75Co0.25Ti3O21 was firstly explored as a new sonocatalyst with magnetic recyclability. The magnetic catalysts can be easily collected with a magnetic bar after sonocatalytic reactions, and the structure and efficiency were kept after being recycled. Since the mechanism of sonocatalysis under ultrasonic vibration is still not fully understood, experiments including samples with different polarization and morphology, under different frequencies and intensities of ultrasonic radiation were conducted. The results suggested that the sonocatalytic efficiency was in proportion to polarization instead of morphology and a possible mechanism of squeezed model was proposed.
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