Synthesis of piezoelectric catalyst LiTaO3 and its application in efficient degradation of organic pollutants

Lithium tantalate (LiTaO 3 ) powder was synthesized via a simple and efficient method employing LiF and Ta 2 O 5 as raw materials, making its inaugural application in the piezoelectric catalytic degradation of organic dye. Subjected to ultrasonic vibration, LiTaO 3 powder degraded 100% Rhodamine B dye within a 16-min period, demonstrating the reaction rate constants ( k ) of 0.28012 min −1 . Even after six catalytic cycles, the degradation rate remained 94%. Mechanistic investigations revealed that hydroxyl radicals (•OH) and superoxide radicals (•O 2 − ) predominantly drive the piezoelectric catalytic degradation of RhB. This research introduces innovative strategies and methodologies for synthesizing and utilizing new piezoelectric catalysts, thus making significant contributions to the development of efficient and sustainable technologies for environmental remediation.