Spinel ferrite nanomaterials - MgFe2O4 - Synthesis by appropriate microwave solution combustion (Msc) method of visible light–responsive photocatalyst for Rb21 dye degradation

Abstract

Ferrite’s spinel has acquired appeal for its use in biomedical, pharmaceuticals, electrical devices, photocatalyst, and other fields. Spinel may also be manufactured using the Microwave Solution Combustion (MSC) process, which is a viable alternative to sol–gel, co-precipitation, hydrothermal, and Hammer's methods since it is rapid, energy-efficient, and requires lesser equipment. The MSC technique provides insight into the impact of its many factors. Microwave irradiation is utilized in this method to retain precursors in an excited state and make them highly reactive. This technique is usually carried out using a Raga's scientific microwave reactor with a frequency of 2.45 GHz, T = 100°C. Metal nitrates (precursers) and Urea are the most often utilized preparation for nanomaterials. Because of its high-temperature range or propellant combustion requirements, urea is the most used fuel. To accomplish a quicker and better yield product, many factors such as fuel to oxidizer ratio, irradiation period, microwave power, temperature and pressure may be tuned. This procedure does not require any additional calcination; however, it does necessitate numerous washing steps to purify the final result. The 4000–400 cm−1 peaks were examined in the composition characterization of spinel ferrites using FTIR findings. The focus of the research was to find a MgFe2O4 spinel with a Magnesium A-site in Ferrite particles. This study is to explore catalyst behaviour in sessions of structural, compositional, crystallinity, and magnetic stability with neodymium magnets used for the separation of RB21 dye from synthetic wastewater. To check the reusability at 20 mg catalyst dosage at 20 mg/L dye concentration which gives 4 runs efficiency 90% − 66% observed.