fig5

Figure 5. The illustration of preparation, characterization, and the electrocatalyst performance of the MOFs-based hydrogel. (A) The illustration of the fabrication procedure and the SEM images (5 μm) of Ni₃S₂-Co₉S₈/NCA, and the Tafel plots of the Ni₃S₂-Co₉S₈/NCA, Co₉S₈/NCA, Ni₃S₂/NCA, NCA, and RuO₂. Reprinted (adapted) with permission from ref^[70]. Copyright 2022 American Chemical Society; (B) The illustration of the fabrication procedure. The XRD image (1 μm) of pAAm@ZIF-8. Time-dependent absorbance of ABTS^•+ catalyzed by free GOx/HRP system, GOx/HRP@pAAm, GOx/HRP@pAAm@PDA, and GOx/HRP@pAAm@ZIF-8, respectively. Reproduced with permission from ref^[72]. Copyright 2021 Elsevier. MOFs: Metal-organic frameworks; SEM: scanning eletron microscope; XRD: X-ray diffraction; ZIF: zeolitic imidazolate framework.