Figure 7.

FE-SEM images of PANI/GOx (A) and Ppy/GOx (B) composite nanoparticles after 24 h lasting enzymatic polymerization. (The polymerization solution: 0.05 mol L⁻¹ SA buffer, pH 6.0, with 0.05 mol L⁻¹ of glucose, 0.75 mg mL⁻¹ of GOx, and 0.50 mol L⁻¹ of aniline or pyrrole).