An investigation of spinel ferrites afe2o4 anchored onto rgo as electrode materials for electrochemical and photocatalytic applications

Abstract

Supercapacitors and other innovative devices for electric energy generation and storage could significantly improve ecological situation in large densely populated cities by making it possible to fully avoid the use of combustion engines in the areas of compact settlement. Recognition of nanomaterials for supercapacitor has given the new extended platform to the researchers in order to identify the appropriate electrode material which can deliver the high power and energy densities. It is believed that the nanostructured electrode material can improve the power output and cycle life of the supercapacitor. Many types of agricultural waste could be considered as abundant, low cost carbon source for large-scale fabrication of value-added graphene-type materials. Here, we demonstrate that widely available coconut waste (coconut coir and coconut shell) can be efficiently converted into reduced graphene oxide via simple catalytic oxidation in a muffle furnace using ferrocene as an efficient and low-cost catalyst. The structure and morphology of the as prepared materials were characterized by XRD, SEM, and TEM and XPS techniques. The results confirmed the formation of high-quality reduced graphene oxide. The as-prepared graphene oxide was then analyzed as an electrode material for supercapacitor applications by examining its electrochemical behaviour in 2M KOH aqueous solution. We have found that the material exhibits high performance as an electric double layer capacitor (EDLC) and demonstrates excellent cyclic stability. The rGO form Coconut coir material exhibited the enhanced photocatalytic activity which can degrade about 65% of malachite green dye with 120 min under visible light irradiation newlineTo enhance the electrochemical and photo catalytic of rGO derived from coconut newline