Figure 4 | Scientific Reports

Figure 4

From: Cobalt-Porphyrin-Platinum-Functionalized Reduced Graphene Oxide Hybrid Nanostructures: A Novel Peroxidase Mimetic System For Improved Electrochemical Immunoassay

Figure 4

(A) Comparison of different components in the absorbance density: (a) GO + TMB + H2O2, (b) CoTPP/GO + TMB + H2O2, (c) PtNPs/rGO + TMB + H2O2, (d) PtNPs/CoTPP/rGO + TMB + H2O2, (e) PtNPs/CoTPP/rGO + TMB and (f) PtNPs/CoTPP/rGO + H2O2; (B) the corresponding photographs in figure (A); and (C) DPV curves of (a0,a) GO-modified GCE, (b0,b) CoTPP/GO-modified GCE, (c0,c) PtNPs/CoTPP/rGO-modified GCE and (d0,d) PtNPs/rGO-modified in pH 7.0 PBS in the (a,b,c,d) absence and (a0,b0,c0,d0) presence of H2O2.

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