Peroxymonosulfate-based advanced oxidation processes (PMS-AOPs) are considered promising technologies for the degradation of recalcitrant norfloxacin in wastewater. However, this technology exhibits sluggish carrier transport and slow regeneration of the catalytic center. In this study, cobalt-doped ZnAl-layered double hydroxides (ZnAl-LDH) were synthesized as recoverable piezoelectric catalysts for efficient activation of PMS. The cobalt-doped ZnAl-LDH (0.06 mmol cobalt) demonstrated the most effective degradation performance within 15 min, achieving a degradation efficiency of 91.50% and a rate constant of 0.1644 min⁻¹. The constructed piezoelectric catalytic system was mainly based on a non-radical mechanism, including singlet oxygen (¹O₂) and electron transport. Notably, the remarkable piezoelectric properties of the catalyst accelerated carrier transport and promoted regeneration of the catalytic active center (Co²⁺). The remarkable structural stability of the catalyst not only resulted in a significant reduction of Co leaching, but also enabled its successful adaptation to complex aqueous environments. This study provides non-negligible importance for future research on the structure and mechanism of piezoelectric catalysts used for PMS activation.

基于过氧单硫酸盐的高级氧化工艺 (PMS-AOP) 被认为是用于降解废水中顽固诺氟沙星的有前途的技术。然而，该技术表现出载流子传输缓慢和催化中心再生缓慢。在这项研究中，钴掺杂的 ZnAl 层状双氢氧化物 (ZnAl-LDH) 被合成为可回收的压电催化剂，用于有效激活 PMS。^{钴掺杂的 ZnAl-LDH（0.06 毫摩尔钴）在 15 分钟内表现出最有效的降解性能，实现了 91.50% 的降解效率和 0.1644 分钟-1}的速率常数。构建的压电催化体系主要基于非自由基机理，包括单线态氧（¹ O ₂) 和电子传输。值得注意的是，催化剂显着的压电特性加速了载流子传输并促进了催化活性中心（Co ²⁺）的再生。该催化剂出色的结构稳定性不仅显着减少了 Co 的浸出，而且使其能够成功适应复杂的水环境。该研究为未来研究用于PMS活化的压电催化剂的结构和机理提供了不可忽视的重要性。