Synthesis and Efficacy of ZnO-CuO Piezoelectric Catalysts: A Cost-Effective Catalysts for Efficient Degradation of Organic Pollutants and Antibacterial in Water

The degradation of organic pollutants has become a focal point due to environmental concerns and practical considerations. In this study, a cost-effective and efficient ZnO piezoelectric catalyst doped with CuO was synthesized through an in-situ method. The research highlights the exceptional degradation effectiveness of the ZnO-CuO piezoelectric catalyst across various zinc-copper ratios, with the optimum catalytic activity achieved at a 1:1 ratio. Degradation experiments using organic dyes (Methylene Blue, Congo Red, and Rhodamine B) revealed impressive results, with methylene blue exhibiting a degradation rate of approximately 90% after 90 min under magnetic stirring at room temperature in a dark environment. Electrochemical impedance spectroscopy (EIS) analysis suggested that the catalyst’s high piezoelectric activity can be attributed to its low charge carrier transfer resistance, facilitating the kinetic process of charge carrier separation. Furthermore, the catalyst exhibited notable antibacterial inhibition capabilities. The synthesis of ZnO-CuO piezoelectric catalysts on a large scale offers a promising, economical, and efficient approach for water quality remediation.

Graphical Abstract