Piezoelectric catalytic activity of strontium titanate/nickel butadione oxime composites.

Vibration energy can be seen everywhere in our daily life, such as walking, noise and car engines. If all this energy could be captured and harnessed, it would be an interesting breakthrough in energy. This has been made possible by the discovery of piezoelectric materials, which can convert vibrational energy into electricity by sensing positive and negative charges. In this paper, nickel butadione oxime Ni(dmgH) 2 and strontium titanate (SrTiO 3) were successfully combined together to form the composite material of nickel butadione oxime/strontium titanate SrTiO 3 /Ni(dmgH) 2 by hydrothermal method. The morphology and composition of the sample were analyzed by XRD, SEM and XPS characterization methods. Strontium titanate and nickel butadione oxime were successfully combined with good crystallinity. According to the degradation results of HTC solution, the piezoelectric catalytic performance of the dye can be significantly improved in a specific time, and the degradation efficiency of HTC solution reaches about 91 %. Compared with the pure Ni(dmgH) 2 , the composite sample shows better piezoelectric catalytic activity under ultrasonic vibration. A novel SrTiO 3 /Ni(dmgH) 2 composite piezoelectric material was synthesized by hydrothermal method. The addition of SrTiO 3 promotes the separation of electrons and holes, and the piezoelectric catalytic activity is significantly improved. Compared with pure Ni(dmgH) 2 , the composite exhibited better piezoelectric catalytic activity under ultrasonic vibration. [Display omitted] • The piezoelectric catalyst SrTiO 3 /Ni(dmgH) 2 was synthesized by simple hydrothermal method. • The addition of SrTiO 3 facilitates the separation of electrons and holes. • SrTiO 3 /Ni(dmgH) 2 has excellent piezoelectric catalytic HTC performance. • SrTiO 3 /Ni(dmgH) 2 has good stability and reusability. [ABSTRACT FROM AUTHOR]