Abstract
AbstractA novel amperometric biosensor was developed by immobilizing galactose oxidase (GAox) on poly (L‐lactide) stabilized gold nanoparticles (Au@PLLA) modified graphene nano‐composite film (RGO‐Au@PLLA/GAox). The direct electron transfer (DET) of GAox was achieved. Cyclic voltammetry of the GAox in the RGO‐Au@PLLA film revealed a pair of well‐defined and quasireversible peaks at about −0.137 V (vs. SCE), which is characterized of the Cu(II)/Cu(I) redox couple for the galactose oxidase. Amperometric response was measured as a function for the determination of galactose (GA) and dihydroxyacetone (DHA). The constructed biosensor also possesses good stability, reproducibility and anti‐interference ability.
Published Version
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