Emerging environmental issues urge for energy-saving, clean and efficient water treatment technologies. Piezoelectric materials are promising to meet the needs via driving piezocatalysis-based advanced oxidation technologies (AOTs). Because of the non-centrosymmetric nature of piezoelectric materials, they demonstrate unique features by creating a built-in electric field via dipole polarization to generate polarized holes, electrons, and reactive oxygen species for water decontamination. This review covers the recent advances of piezoelectric nanomaterials and their applications in water remediation via piezocatalysis, piezo-photocatalysis, piezoelectric Fenton (piezo-Fenton), and piezocatalytic Fenton-like processes. We have discussed the features of piezoelectric nanomaterials, mechanisms of different piezocatalytic systems, stability of piezoelectric catalysts, and opportunities for new research directions. Perspectives on future design of novel nanostructured piezoelectric materials and promising combination with other catalytic systems for AOTs will also be provided.

新出现的环境问题迫切需要节能、清洁、高效的水处理技术。压电材料有望通过驱动基于压电催化的高级氧化技术 (AOT) 来满足需求。由于压电材料的非中心对称性质，它们通过偶极极化产生内置电场以产生极化空穴、电子和活性氧物质以进行水净化，从而展示出独特的特性。这篇综述涵盖了压电纳米材料的最新进展及其在通过压电催化、压电光催化、压电芬顿（piezo-Fenton）和压电催化类芬顿过程进行水修复中的应用。我们已经讨论了压电纳米材料的特性，不同压电催化系统的机制，压电催化剂的稳定性，以及新研究方向的机会。还将提供有关新型纳米结构压电材料的未来设计以及与其他 AOT 催化系统的有希望结合的前景。