2O 2 sensor based on platinum, ZnFe 2O 4 functionalized reduced graphene oxide]]>

摘要

AbstractWe report a simple method for the preparation of a hydrogen peroxide (H2O2) sensor based on reduced graphene oxide (rGO). ZnFe2O4and Pt nanoparticles were supported on graphene sheets (Pt/ZnFe2O4/rGO) to modify the glassy carbon electrode, which were used to detect H2O2. The morphology and structure of Pt/ZnFe2O4/rGO were characterized by scanning electron microscopy, transmission electron microscopy, X-ray powder diffraction and X-ray photoelectron spectroscopy. The property of the H2O2sensor was evaluated by cyclic voltammetry and amperometry. The prepared H2O2sensor showed a wide linear range from 0.5?μm to 10.2?mM with a low detection limit of 0.1?μM.Highlights?Electrochemical analysis owes high sensitivity, fast response and simplicity.?Graphene can disperse metal nanoparticles and enhance catalytic activity.?The porous structure provides high specific surface area and enough active sites.?This sensor exhibits high activity, wide detection concentration and low detection.]]>