Construction of MoS2@RGO hybrid catalyst: An efficient and highly stable electrocatalyst for enhanced hydrogen generation reactions

Abstract

It has been hypothesized that molybdenum disulfide, also known as MoS₂, is an attractive option for the synthesis of hydrogen with a high degree of efficiency. It is preferred to construct a hybrid based on MoS₂ in order to increase the catalytic efficiency, and it is vital to have a grasp of the nature of catalysis in order to make advances in this sector. In this paper, we use reduced graphene oxide, generally known as rGO, to create a MoS₂@RGO hybrid catalyst with a number of favorable characteristics for the hydrogen evolution process (HER). The MoS₂@RGO hybrids are next subjected to a battery of analytical tests, including TGA, XRD, TEM, XPS, Raman and BET. 1T MoS₂@RGO hybrids demonstrated short Tafel slopes (46 and 52 mV.dec^‑1) and low levels of overall (70 and 71 mV versus RHE) in both alkaline and acidic electrolytes, allowing for a high current density of 10 mA.cm². The findings show that HER exists in flawed heterostructures. Because 1T phase molybdenum disulfide (MoS₂) has more functional sites and a higher intrinsic permeability, it is responsible for the catalyst's outstanding HER efficiency. This paper presents a novel way for fabricating highly active and responsive HER catalysts, as well as a way that is both feasible and practical for fabricating defective-MoS₂@RGO heterostructures.