A comparative analysis of the electrochemical performance obtained for magnetic graphene oxide-based composites.

• Magnetic GO and rGO-based composites decorated with Py NWs were obtained. • Electrochemical results unveils that Py NWs play a remarkable role in the increased conductivity of both composites. • Relative conductivity increase of Py NWs/GO is significantly higher than that of Py NWs/rGO. Low dimensional carbon allotropes are the most used materials in composites. In addition, when magnetic nanostructures are assembled with carbon-based materials, a versatile material for building sensitive electrodes is achieved. Here, we propose a route to obtain magnetic composites based on both graphene oxide and reduced graphene oxide with permalloy nanowires. A comparative analysis of the electrochemical performance for such composites reveals that a relatively small amount of magnetic nanowires leads to an increased conductivity with respect to that of the pristine matrix, being such effect more pronounced for the graphene oxide-based composite. Therefore, the presence of permalloy nanostructures plays a determinant role in the conductive properties of graphene oxide-based materials, providing an attractive alternative for sensing purposes. [ABSTRACT FROM AUTHOR]