Construction of MoS 2 -rGO Hybrid Catalyst: An Efficient and Highly Stable Electrocatalyst for Enhanced Hydrogen Generation Reactions

Abstract

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.