Synthesis, Characterization, and Photocatalytic Application of α-Fe۲O۳/α-AgVO۳ Nanocomposite for Removal of Methylene Blue from Aqueous Media

سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 55

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شناسه ملی سند علمی:

JR_IJCCE-42-4_010

تاریخ نمایه سازی: 17 خرداد 1404

چکیده مقاله:

In this study, α-Fe۲O۳/α-AgVO۳ nanocomposite was successfully synthesized via a solvothermal process, followed by a co-precipitation method. The products were characterized by X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM), Energy Dispersive X-ray (EDX) spectroscopy, Fourier Transform InfraRed (FT-IR) spectroscopy, Diffuse Reflectance Spectroscopy (DRS). The photocatalytic activity of α-Fe۲O۳/α-AgVO۳ nanocomposite was investigated for the removal of Methylene Blue (MB) dye from aqueous solutions under UltraViolet (UV) light irradiation. The results revealed that the photocatalytic performance of the nanocomposite is higher than that of the pure compounds. The effect of pH, MB concentration, and photocatalyst dosage on the removal efficiency of MB was also evaluated. The solution pH of ۵.۹, MB concentration of ۲۰ mg/L, and photocatalyst dosage of ۱.۵ g/L were obtained as the optimal conditions. The kinetics of MB degradation was studied, and it was found that the reaction follows the pseudo-first-order equation. Under the optimal conditions, the MB removal efficiency of ۹۸% was obtained, and the rate constant was calculated to be ۰.۰۳۱۲ min-۱. A possible mechanism for the p-n heterojunction was proposed to describe the enhanced photocatalytic activity of the α-Fe۲O۳/α-AgVO۳ nanocomposite. The findings demonstrated that the α-Fe۲O۳/α-AgVO۳ nanocomposite with improved photocatalytic activity can be used to remove contaminants from aqueous media.

نویسندگان

Seyed Mohammad Reza Shariatzadeh

Department of Chemical Engineering, Arak Branch, Islamic Azad University, Arak, I.R. IRAN

Mahmoud Salimi

Department of Chemical Engineering, Arak Branch, Islamic Azad University, Arak, I.R. IRAN

Hasan Fathinejad

Department of Chemistry, Farahan Branch, Islamic Azad University, Farahan, I.R. IRAN

Ali Hassani Joshaghani

Department of Chemical Engineering, Arak Branch, Islamic Azad University, Arak, I.R. IRAN

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