Construction of Fe2O3 Nanoparticles Decorated for a Highly Efficient Oxygen Evolution Reaction Activity

Fossil fuels are going out of stock as a result of population and industrial growth, and the uptake of fossil fuels has also affected the atmosphere, causing pollution and other defects. Over the past few years, researchers focused on fuels from renewable sources that are unharmful to humans and the Earth's atmosphere. Constructing lucrative and highly competent electrocatalysts is still a challenging task in the oxygen evolution reaction (OER) activity. In this study, we have synthesized Fe2O3 with N- and S-doped reduced graphene oxide (rGO) via the co-precipitation technique subsequent to the annealing procedure. The formation of rhombohedral phase Fe2O3 spherical nanoparticles on N- and S-doped rGO has been examined. The introduction of N- and S-doped rGO has not only reduced the agglomeration of the particles and particle size but also facilitated the electronic structure. As a result, the Fe2O3/N- and S-doped rGO nanocomposite requires only 250 mV to attain 10 mA/cm(2) and the Tafel slope value of 115 mV/dec in an alkaline medium. With the benefit of the presence of N- and S-doped graphene sheets, charge-transfer resistance of Fe2O3/N and S rGO was lower in 24.9 Omega and also exhibited a large electrochemical surface area of 110 cm(2). Therefore, our findings suggest that iron oxide decorated in a carbon matrix could efficiently enhance the OER activity to accomplish alkaline water splitting.