Single-atom catalysts (SACs) have developed as a potential
advanced
variety of catalysts wherein copper SACs (Cu SACs) have appeared as
a rising star in catalysis in which promising catalytic activity is
achieved by a well-adjusted d-band center. Herein, the most recent
advancements in the synthesis of copper SACs are highlighted. Various
electrocatalytic applications such as carbon dioxide reduction reaction,
oxygen reduction reaction, nitrogen reduction reaction, biotherapeutic
applications, coupling reactions, hydroxylation, hydrogenation, photocatalytic
reactions, and other miscellaneous reactions of Cu SACs coordinated
into different supports have been thoroughly reviewed, and the stability
and electrocatalytic performance of Cu SACs in fuel cells, zinc–CO2 batteries, and zinc–air batteries have been discussed.
This review summarizes the study of most recent developments in the
synthesis and applications of Cu SACs.