Effective Heterogeneous Photocatalytic Degradation of Crystal violet Dye using Manganese Ferrite Nanoparticles

Abstract

A novel catalyst of MnFe2O4 manganese ferrite nanoparticles (MFN) was synthesized by simple co-precipitation method and successfully used as an efficient heterogeneous photocatalyst following Langmuir-Hinshelwood kinetic approach for the rapid photocatalytic degradation of organic dyes such as Crystal Violet (CV). Several techniques like, Fourier transform infrared (FTIR), X-ray diffractometer (XRD), scanning electron microscope (SEM) and energy dispersive X-ray (EDX) were used to characterize the synthesized heterogeneous photocatalyst. The outcomes of the characterization established that the MNF can be competently synthesized with the size ranging between 20 to 50 nm, using sodium dodecyl sulphate (SDS) as stabilizer. UV-visible spectrophotometer was used for monitoring CV dye photodegradation. Different controlling analytical parameters such as dosage of MFN photocatalyst, concentration of CV dye, time and pH were optimized to explore the potential application of newly synthesized catalyst MFN for the maximum photodegradation of CV dye. The kinetics of reaction mechanism was also analyzed by plotting Eley-Rideal model and Langmuir-Hinshelwood model. The MFN was found to be an environmental friendly, highly economical and effective heterogeneous photocatalyst with rapid 90% efficiency to degrade the dye under investigation and easily could be regenerate with the help of magnet for successive uses.

Keywords

• MnFe2O4 nanoparticles
• Heterogeneous photocatalyst
• Crystal violet degradation