Electrochemical rutin sensor based on graphene oxide and functionalized multiwall carbon nanotubes@nafion0.1% hybrid nanocomposite modified glassy carbon electrode

Abstract

A highly sensitive electrode based on graphene oxide and functionalized multiwall carbon nanotube hybrid composite as coated on glassy carbon electrode (GCE) for the electrochemical rutin sensor. The as-prepared GO/f-MWCNTs@nafion composite was characterized by promising analysis such as field emission scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), UV-Vis Diffusive reflectance spectroscopy (UV-DRS). The GO/f-MWCNTs@nafion/GCE hybrid nanocomposite revealed substantial electrocatalytic activity toward the rutin sensor. The GO/f-MWCNTs@nafion/GCE electrode manifested voltammetric response over the concentration ranging of 0.02 to 39.69 μM with a limit of detection (LOD) 0.004 nM, respectively. This analytical values suppressed the previously existing method for the electrochemical sensing of rutin. Additionally, the modified electrode proposed excellent stability, repeatability, and sensitivity.