Single-atom catalysts toward electrochemical water treatment

Single-atom catalysts (SACs) have emerged as promising materials in environmental catalysis, attributed to their outstanding performance, robust structural properties, and optimal use of active metal sites. However, there is a critical need for a comprehensive review to summarize the successful integration of SACs in electrochemical water treatment. In this paper, we provide an in-depth review of the in-situ preparation methods for SACs electrode. The design principles for SACs employed in electrochemical water treatment are outlined. We particularly focus on the application of SACs in wastewater treatment using electrochemical catalytic technology. The development and application potential of SACs in electrochemical water treatment are critically introduced from the aspects of electrochemical advanced oxidation processes (EAOPs), electrochemical nitrate reduction reaction (NO3RR), electrochemical advanced reduction processes (EARPs) dehalogenation and electrochemical micropollutant value-added. In conclusion, we discuss anticipated developments, further scientific research, and practical applications of SACs in electrochemical water treatment.