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Growing interest in p-block metal single-atom catalysts (PM-SACs) is driven by their low toxicity, economic viability, and transition metal-like catalytic properties. However, selection criteria for p-block single-atom species and catalytic mechanisms of PM-SACs remain unclear. This study explores the catalytic abilities of PM-SACs and their transition metal counterparts (TM-SACs) based on polymetric carbon nitride (PCN) for photocatalytic hydrogen peroxide (H
Lu et al. (Tue,) studied this question.