Atomically Precise Cu Nanoclusters: Recent Advances, Challenges, and Perspectives in Synthesis and Catalytic Applications

• Summarizes recent advances in the synthesis and catalytic applications of atomically precise Cu nanoclusters. • Elucidates the structure–property–functionality relationship at the atomic level. • Highlights the unique characteristics of Cu nanoclusters, including low cost and superior catalytic performance. • Provides critical analysis of current challenges and future perspectives in this rapidly evolving field.