Purification of wastewater by the piezo-catalyst effect of PbTiO3 nanostructures under ultrasonic vibration.

In this work, the piezoelectric catalytic property of PbTiO3 perovskite synthesized by a hydrothermal method has been investigated. The samples synthesized using no surfactant, lemon, orange, and watermelon as the surfactant. As-prepared PbTiO3 nanostructures as mechanical harvesting material were used to purify water containing organic contaminants. The relationship between piezoelectric-induced catalytic activities and the temperature reaction, time reaction, surfactant type, ultrasonic power, ultrasonic time and ultrasonic pulse are investigated. Results show that it is possible to degrade 69.7 % of acid red 143 and 96.05 % acid black by controlling different parameters. In this research ultrasonic probe with power of 100-600 W and frequency of 18 KHz was used.