Atomic Printing Strategy Achieves Precise Anchoring of Dual-Copper Atoms on C₂N Structure for Efficient CO₂ Reduction to Ethylene

Isolated metal sites catalysts (IMSCs) play crucial role in electrochemical CO₂ reduction, with potential industrial applications. However, tunable synthesis strategies for IMSCs are limited. Herein, we present an atomic printing strategy that draws inspiration from the ancient Chinese “movable-type printing technology”. Selecting customizable combinations of metal atoms as metal precursors from an extensive binuclear metal library. A series of dual-atom catalysts were prepared by utilizing the edge nitrogen atoms in the C₂N cavity as anchoring “pincers” to capture metal atoms. To prove utility, the dual atom catalyst Cu₂-C₂N is investigated as electrocatalytic CO₂RR catalyst. The synergistic interaction of dual Cu atoms promotes C−C coupling and guarantees FE_C2+ (90.8 %) and FE_C2H4. (71.7 %) at −1.10 V vs RHE. DFT calculations revealed the Cu₂ site would be subtly flipped during CO₂RR for enhancing *CO adsorption and dimerization. We validate that atomic printing strategies are applicable to wide range of metal combinations, representing a significant advancement in the development of IMSCs.