Production of Hydrogen Peroxide by Piezocatalytic Processes: Mechanisms, Recent Advances, and Prospects

Hydrogen peroxide (H2O2) is an important green oxidant and chemical raw material, which is widely used in environmental remediation, disinfection, organic synthesis and energy storage. Piezocatalytic H2O2 production, utilizing water and oxygen as raw materials along with mechanical energy as the power source, represents a green and sustainable process. In the past decade, a series of studies on piezoelectric catalytic production of H2O2 have been developed with remarkable results. In this review, we summarize the research progress of piezoelectric catalytic preparation of H2O2. Following a concise overview highlighting the advantages of piezoelectric catalytic preparation of H2O2, the fundamental mechanisms of preparing H2O2 including piezoelectric system, piezoelectric photocatalytic system and piezo-Fenton system are discussed, and the piezoelectric catalytic materials currently under research are introduced. Finally, a brief summary of the research in the field of piezoelectric catalytic production of H2O2 and prospects for future work are given.