Investigation On Piezoelectrochemical Effect Of Piezoelectric/Electrolyte Composite

Piezoelectrochemical effect is a coupling effect of piezoelectric effect and electrolytic effect, which could transform vibration energy into chemical energy. While, there are not many works about piezoelectrochemical effect which is due to the lack of the materials that can bring about piezoelectrochemical effect directly. Since2010, the piezoelectrochemical effect, which is due to the coupling effect of piezoelectric effect and electrolytic effect, has attracted attention all over the world.The piezoelectrochemical effect has been investigated systematically in this work, and the main work of this investigation is listed as follows:1. The feasibility of piezoelectrochemical effect, which is due to the coupling effect of piezoelectric effect and electrolytic effect, has been investigated.(Chapter3)The piezoelectrochemical effect test system was constructed of piezoelectric bimorph cantilever and water electrolysis device. The piezoelectric bimorph cantilever transformed vibration into electric signal which split water into hydrogen and oxygen. The result demonstrated the feasibility of piezoelectrochemical effect and provided a new way to produce hydrogen.2. The application of piezoelectrochemical effect in degradation of wastewater has also been investigated.(Chapter4)(1) The zinc oxide nanorod was fabricated by hydrothermal method, which diameters and length-to-diameter ratios are about25nm and50, respectively. Under the ultrasonic vibration, the C.I. Acid Orange from aqueous solution was degraded with a degradation ratio～80%and a initial concentration～10-5mol/L. The concentration, PH value, time and amount of zinc oxide nanorod, which influence the degradation ratio of C.I. Acid Orange aqueous solution was investigated.(2) The efficiency of decomposing a dye of C.I. Acid Orange from aqueous s olution was enhanced via a combination effect of piezoelectrochemical effe ct and photocatalytic effect of zinc oxide.