fig19

From: Layered double hydroxide-based single-atom catalysts: precise catalyst design on a two-dimensional ‘atomic canvas’

Figure 19. (A) Biocompatible MgAl-LDH-supported Ru single-atom nanozyme with multi-enzyme mimetic activity and high intrinsic peroxidase-like activity; (B) ROS-scavenging in RAW 264.7 cells by Ru₁/LDH and LDH. (A and B) Reprinted with permission from Ref.^[56]. Copyright 2023, Wiley-VCH; (C) Optimized atomic configurations of ORR/OER elementary steps on FeNi-LDH@DACs; (D) Top/side views of FeNi-LDH@DACs charge density difference; (E) Electron density map of FeNi-LDH@DACs; (F) Structures and charge transfer directions of FeNi-LDH@DACs and FeNi-DACs; (G) Schematic of liquid Zn-air batteries; (H) Discharge-charge cycling of FeNi-LDH@DACs and 20% Pt/C + RuO₂ in liquid ZABs. (C-H) Reprinted with permission from Ref.^[62]. Copyright 2025, American Chemical Society. SOD: Superoxide dismutase; CAT: catalase; DPPH: 1,1-diphenyl-2-picrylhydrazyl radical; LDH: layered double hydroxide; DAC: dual-atomic catalyst; PCD: peroxidase; ROS: reactive oxygen species; ORR: oxygen reduction reaction; OER: oxygen evolution reaction; ZAB: zinc-air battery.