Recent advances in the single-atom catalysts for persulfate activation and pollutant oxidation: A review

Single-atom catalysts (SACs) are a form of catalyst where single metal atoms are anchored on a suitable support, which maximizes the utilization the of metal atoms and provides strong catalytic activity. SACs typically have unique physical and chemical properties as well as excellent catalytic activity, making them an important research topic in the field of catalysis. In the present review, the preparation methods and characterization techniques used for SACs are summarized based on research on SACs in recent years, both domestic and overseas. Furthermore, the characteristics of SACs, the application of SACs in sulfate radical (SO4- )-advanced oxidation processes (SR-AOPs), and the organic-degradation mechanisms of such systems are systematically discussed. Finally, the challenges and future research directions fot SACs in SR-AOPs are presented.

Automated summary

Single-atom catalysts (SACs) are catalysts where single metal atoms are anchored on a suitable support, displaying unique physical and chemical properties and excellent catalytic activity. This review summarizes the preparation methods, characterization techniques, and applications of SACs in sulfate radical (SO4- )-advanced oxidation processes (SR-AOPs), and discusses the organic-degradation mechanisms of SACs in such systems. The challenges and future research directions for SACs in SR-AOPs are also presented.