Graphene Oxide Modified Electrodes for Dopamine Sensing

Figure 4

Synthesis routes of the PFeTPP/PSS-Gr composite by the solvothermal method (a). HRTEM images of PFeTPP/PSS-Gr (b). DPVs of DA at the PFeTPP/PSS-Gr modified GCE in the presence of 500 μM AA and 30 μM UA with different concentrations (c).