fig1
From: Heterogeneous single-atom catalysts for energy process: recent progress, applications and challenges
Figure 1. (A) The universal synthesis procedure. Metal single-atom catalysts (M-SACs) are prepared in two steps. Reproduced from Ref.[21] with permission from Springer Nature. (B) Schematic illustration of the iced-photochemical process. Reproduced from Ref.[22] with permission from Springer Nature.
