Progress in the Application of Piezoelectric Nanomaterials in Catalysis: An Emerging Clean Technology.

In recent years, nano-piezoelectric materials have demonstrated revolutionary potential in catalytic applications owing to their unique electromechanical coupling effects and mechanical-to-chemical energy conversion capabilities. Research focus has shifted from performance optimization of single materials to designing multi-scale band engineering and multi-field coupling mechanisms aimed at enhancing catalytic efficiency. The development of novel nano-piezoelectric cleaning materials has become a research hotspot, with various nontraditional piezoelectric materials being extended into organic degradation, biomedicine, and environmental remediation applications, accelerating the transition of piezocatalysis from laboratory research to practical implementation. This review summarizes recent advancements in piezoelectric nanomaterials for catalysis; briefly introduces the fundamental principles of piezocatalytic technology; highlights applications in organic matter degradation, antibacterial treatment, and heavy metal reduction; and concludes with discussions on current challenges and future development prospects. The article provides valuable references for both research and practical applications of nano-piezoelectric materials in piezocatalysis.