Single atom catalysts (SACs) have received soaring interest in environmental applications due to their ultrahigh atomic efficiency and drastically reduced metal loading. In this review, we summarized the preliminary efforts in applying SACs for heterogeneous catalytic ozonation (HCO). Mechanistic analyses revealed a creditable consensus that highly dispersed active single atoms can accelerate the decomposition of ozone (O) into surface-adsorbed *O and free O. However, the activity of SAC toward O decomposition varies, depending on the central metal species and coordination environment. In this review, we discussed the synthesis and characterization of SACs, emphasizing their application and catalytic regimes in HCO. Also, limitations and prospects of SAC-based HCO were proposed to shed light on future studies.

中文翻译：

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用于非均相催化臭氧化的单原子催化剂

单原子催化剂（SAC）由于其超高的原子效率和大幅减少的金属负载量，在环境应用中受到了极大的关注。在这篇综述中，我们总结了将 SAC 用于非均相催化臭氧化 (HCO) 的初步努力。机理分析揭示了一个可信的共识，即高度分散的活性单原子可以加速臭氧 (O) 分解为表面吸附的 *O 和游离 O。然而，SAC 对 O 分解的活性会有所不同，具体取决于中心金属种类和配位环境。在这篇综述中，我们讨论了 SAC 的合成和表征，强调了它们在 HCO 中的应用和催化机制。此外，还提出了基于 SAC 的 HCO 的局限性和前景，以阐明未来的研究。