Fig. 7
Mechanism of Ag@Ni(OH)2 electrode on glucose sensing on and its morphology. a Schematic illustration of the fabrication processes of Ag@Ni(OH)2 directly on the GNF and the hierarchical structure of the electrode for glucose sensing. b, c SEM images of Ag@Ni(OH)2-GNF prepared with 0.45 mM AgNO3 after 4 h at different magnifications. d TEM image of Ag wrapped by Ni(OH)2. Scale bar is 2 µm for b, and 1 µm for c and d
