A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on Magnetic Core-Shell Fe₃O₄@C/Au Nanoparticle Nanocomposite

Figure 3

(a) CVs of Fe₃O₄@C/AuNPs/ITO at the scan rates of 40, 60, 100, 150, 200, 250, and 300 mV·s⁻¹ (from internal to external) in 0.1 M pH 7.4 PBS containing 0.1 mM H₂O₂, respectively. The inset shows the linear plots of the peak current vs. ; (b) CVs of different modified electrodes: bare ITO (curve a), Fe₃O₄@C/ITO (curve b), and Fe₃O₄@C/AuNPs/ITO (curve c) in 0.1 M pH 7.4 PBS containing 0.1 mM H₂O₂ at a scan rate of 100 mV·s⁻¹.

(a)

(b)