Electrochemical Sensor for o-Nitrophenol Based on β-Cyclodextrin Functionalized Graphene Nanosheets

Figure 5

(a) The DPV response for the different concentrations of o-NP (a–g: 5, 10, 50, 100, 200, 300, and 400 μM). (b) The calibration plot of o-NP.

(a)

(b)