Figure 2.

Comparison of PtNPs and catalase for catalyze oxygen gas production in 10-plex V-Chip. a) Time-dependent ink advancements with the application of 20 μg·mL⁻¹ PtNPs and catalase. H₂O₂ concentration is 35% or 4% respectively. b) Bar chart advancements after diffusing different volumes of 35% H₂O₂ in the presence of 20 μg mL⁻¹ PtNPs. c, d) Bar chart advancements of diffusing 2 μL of 35 % H₂O₂ in the presence of different concentration of PtNPs (c) or catalase (d). e) Catalytic activity of PtNPs and catalase after treatment at different temperatures for 30 min. f) Catalytic activity of PtNPs (5×) and catalase (1×) in the absence or presence of 5 mM CuSO₄, NH₂OH·HCl, EDTA, NaN₃, ascorbate and 3-amino-1, 2, 4-triazole (3-AT).