• Humaira Khan

• Aamna Balouch

• Kaniz Fatima Soomro

• Huma Shaikh

• Saba Naz

• Aftab Ahmed Kandhro

• Muhammad Qasim Samejo

• Nusrat Naeem Memon

Abstract

A novel catalyst of MnFe2O4manganese ferrite nanoparticles (MFN) was synthesized by simpleco-precipitation method and successfully used as an efficient heterogeneous photocatalystfollowing Langmuir-Hinshelwood kinetic approach for the rapid photocatalytic degradation oforganic dyes such as Crystal Violet (CV). Several techniques like, Fourier transform infrared(FTIR), X-ray diffractometer (XRD),scanning electron microscope (SEM) and energy dispersiveX-ray (EDX) were used to characterize the synthesizedheterogeneous photocatalyst. Theoutcomes of the characterization established that the MNF can be competently synthesizedwiththe size ranging between 20 to 50 nm, using sodium dodecyl sulphate (SDS) as stabilizer. UV-visible spectrophotometer was used for monitoring CV dye photodegradation. Differentcontrolling 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 catalystMFN for the maximum photodegradation of CV dye. The kinetics of reaction mechanism was alsoanalyzed by plotting Eley-Rideal model and Langmuir-Hinshelwood model.The MFN was foundto be an environmental friendly, highly economical and effective heterogeneous photocatalyst withrapid90% efficiency to degrade the dye under investigation and easily could be regenerate withthe help of magnetfor successive uses.

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