Orthogonal Charge Transfer by Precise Positioning of Silver Single Atoms and Clusters on Carbon Nitride for Efficient Piezocatalytic Pure Water Splitting

Abstract Developing efficient piezocatalytic systems for two‐electron water splitting (TEWS) with producing H 2 and H 2 O 2 shows great promise to meet the industrial demand. Herein, Ag single atoms (SAs) and clusters are co‐anchored on carbon nitride (Ag SA+C −CN) to serve as the multifunctional sites for efficient TEWS. The Ag SAs enhance the in‐plane piezoelectric polarization of CN that is intimately modulated by the atomic coordination induced charge redistribution, and Ag clusters afford strong interfacial electric field to remarkably promote the out‐of‐plane migration of piezoelectrons from CN. Moreover, Ag SA+C −CN yields a larger piezoresistive effect that elevates carrier mobility under strain.…

• NN
  National Natural Science Foundation of China

  Award: 51972288, 51672258