Functionalised Au Coated Iron Oxide Nanocomposites Based Reusable Immunosensor for AFB1 Detection

Figure 4

((a) and (b)) Frequency change and CV of (a) bare Au electrode, (b) 4-ATP/Au, (c) aAFB1/4-ATP/Au, (d) BSA/aAFB1/4-ATP/Au, and (e) r-IgG-Cys-Au-Fe₃O₄/AFB1/BSA/aAFB1/4-ATP/Au immunoelectrodes. (c) SEM images of (A) aAFB1/4-ATP/Au, (B) AFB1/BSA/aAFB1/4-ATP/Au, and (C) r-IgG-Cys-Au-Fe₃O₄/AFB1/BSA/aAFB1/4-ATP/Au and (D) EDX of r-IgG-Cys-Au-Fe₃O₄/AFB1/BSA/aAFB1/4-ATP/Au immunoelectrodes.

(a)

(b)

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