Enhanced electrocatalytic hydrazine oxidation on MoS2-GO nanosheets

Abstract

Herein, we present a comprehensive study on electrochemical hydrazine oxidation using hybrid material, MoS2-GO (molybdenum disulfide-graphene oxide), as an efficient electrocatalyst fabricated using the simple chemical reduction method. The MoS2-GO hybrid material adopts a distinctive open flower-like morphology, as demonstrated by field emission scanning electron microscopy (FE-SEM). Asymmetric and uneven distribution is indicated by energy dispersive X-ray spectroscopy (EDS), while UV–Vis investigation displays shifts in peak positions and intensities, signifying the successful formation of the MoS2-GO composite. Further supporting the composite’s structure, X-ray diffraction (XRD) studies validate the hexagonal arrangement of MoS2 layers on the graphene oxide (GO) surface. Through a combination of material synthesis, characterizations, and electrochemical analyses, we demonstrate that the MoS2-GO hybrid exhibits a low overpotential ∼0.2[Formula: see text]V versus SCE. This outstanding electrocatalytic performance of MoS2-GO underscores its potential as a promising candidate for various electrochemical applications, especially those involving hydrazine-based reactions. GO was used as the supporter and promoter by improving the synergetic effect between MoS2 and GO toward the hydrazine oxidation reaction.