fig10
From: Single-atom catalysts for (photo)electrocatalytic biomass valorization to high-value-added chemicals
Figure 10. (A) The synthesis of Pd-N4/Cu-N4 by electrochemical reduction. (B) The EDX mapping images of C, N, Pd, and Cu. Aberration-Corrected HAADF-STEM images of Pd-N4/Cu-N4 showing the distribution of (C) Pd and (D) Cu. (E) Pd 3d for Pd-N4/Cu-N4 and Pd(OAc)2; (F) Cu 2p for CuPc and Pd-N4/Cu-N4. Copyright 2020, Wiley[77].