Macroscopically Oriented Magnetic Core‐regularized Nanomaterials for Glucose Biosensors Assisted by Self‐sacrificial Label

Abstract

Abstract Magnetic core‐regular nanostructures composed of magnetite and regular Prussian blue was prepared by self‐sacrificial macro‐oriented method. Magnetic graphene oxide (MGO) was vertically oriented on the surface of home‐made screen‐printing electrode with the help of constant magnetic field (CMF).Then regular nanostructured Prussian blue (RPB) was realized by chemical reaction through an aerosol deposition. Finally, glucose oxidase (GOx) was immobilized by glutaraldehyde cross‐linking to fabricate glucose biosensors. The linear range of CMF‐RPB/MGO sensor towards glucose was 0.03∼1.35 mM, and the detection limit was 13.4 μM. The CMF‐RPB/MGO sensor could apply to analyze glucose in human serum samples.