Novel molybdenum sulfide-decorated graphitic carbon nitride nanohybrid for enhanced electrochemical oxygen evolution reaction

Abstract

Transition metal chalcogenides are potentially better than electrocatalysts for the OER electrolysis that contain rare earth metals. Still, they have not yet developed to a catalytic performance level that would enable widespread adoption. To attain high-efficiency OER, it is imperative to create logical designs for electrocatalysts based upon transition metals on showing polymer substrate. Here, we discuss the sonication fabrication and extraordinary catalytic activity of MoS₂/g-CN in alkaline media as an OER electrocatalyst. Various techniques like X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and scanning electron microscopy (SEM) are employed to evaluate the structure, surface characteristics and morphology. Conversely, the MoS₂/g-CN electrode’s higher specific SA, outstanding conductivity and very porous framework in 1 M alkaline KOH led to superior OER campaign (overpotential 203 mV with Tafel slope 36 mV/dec). It showed increased OER activity by maintaining high stability for about 35 h. Our results suggest that graphitic carbon nitride can produce steady and sustainable energy and that transition metal chalcogenides with specific morphologies can improve electrocatalytic efficacy. Because of the distinct crystal phase-linked electrical properties, this discovery provides a fresh perspective for potential applications.

Graphical Abstract