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. Author manuscript; available in PMC: 2018 Jun 15.
Published in final edited form as: Biosens Bioelectron. 2016 Nov 3;92:372–377. doi: 10.1016/j.bios.2016.10.094

Fig. 2.

Fig. 2

Schematic illustrations of relevant electrochemical reactions: (a) electrocatalytic reaction of hydrazine on Pt NPs, (b) a very fast competitive side reaction between MB and hydrazine on Pt NPs, and (c) slow reaction between hydrazine and MB. Photographs of solutions containing (d) 10 μM MB and 5 mM hydrazine in 1 mL of PBS, (e) 10 μM MB and 0.001% (w/v) Pt NPs in 1 mL of PBS, (f) 10 μM MB, 0.001% (w/v) Pt NPs, and 5 mM hydrazine in 1 mL of PBS, and (g) 10 μM MB, 0.001% (w/v) Pt NPs, and 5 mM hydrazine in 1 mL of PBS after 15 min in air.