Reduced Graphene Oxide/Pt Nanoparticles/Zn‐MOF‐74 Nanomaterial for a Glucose Biosensor Construction

• DOI: 10.1002/elan.201900599
• Publication Date: 2019-11-07T14:01:03Z
• Authors: Didem Uzak; Atheer Atiroğlu; Vesen Atiroğlu; Bekir Çakıroğlu; Mahmut Özacar
• Keywords: Glucose oxidase; Nanomaterials; Amperometry; Platinum nanoparticles

Abstract In this study, a new glucose biosensor was fabricated by immobilizing oxidase (GOx) on platinum nanoparticles (Pt NPs) decorated reduced graphene oxide (rGO)/Zn‐MOF‐74 hybrid nanomaterial. Herein, the fused advantages of rGO with those porous Zn‐MOF and conductive Pt NPs. This has not only enlarged surface area porosity for efficient GOx immobilization faster mass transport, but also provided favorable electrochemical features such as high current density, remarkable electron mobility through metal nanoparticles, improved transfer between components. The GOx‐rGO/Pt NPs@Zn‐MOF‐74 coated electrode displayed linear measurement range from 0.006 to 6 mM, detection limit 1.8 μM (S/N: 3) sensitivity 64.51 μA mM −1 cm −2 . amperometric response enzyme demonstrated typical behavior Michaelis‐Menten kinetics. obtained satisfying enabled fast accurate in cherry juice using biosensor. water‐stable Zn‐MOF‐74 higher loading capacity can be potent supporting material construction.