Gold nanoparticle functionalized graphene oxide modified platinum electrode for hydrogen peroxide and glucose sensing

This study presents the preparation of gold nanoparticle functionalized graphene oxide (AuNPs-GO) as a new bio-compatible material for sensor applications. The electrocatalytic activity of AuNPs-GO towards electrooxidation of H2O2 was also described by using electrochemical techniques. The fabricated biosensor showed a linear range from 0.1mM to 3.8mM with a sensitivity of 17.68μAmM−1cm−2 and a detection limit of 0.075mM for the detection of glucose. •A new biosensor based on gold–graphene oxide was fabricated for glucose detection.•Electrocatalytic activity of new material towards H2O2 was described.•Biosensor has excellent anti-interference ability due to permselectivity of PoPD.