Fe۳O۴@Polydopamine Core-Shell Nanocomposite as a Sorbent for Efficient Removal of Rhodamine B from Aqueous Solutions: Kinetic and Equilibrium Studies

سال انتشار: 1397
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 12

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شناسه ملی سند علمی:

JR_IJCCE-37-1_003

تاریخ نمایه سازی: 17 خرداد 1404

چکیده مقاله:

In this work, a Fe۳O۴@polydopamine core-shell nanocomposite (Fe۳O۴/PDA) was synthesized through an in situ self-polymerization methods and was applied as a sorbent for Rhodamine B (RhB) removal. The synthetic procedure is simple and involves no organic solvents. The as-prepared Fe۳O۴/PDAnanocomposite was characterized by transmission electron microscope, Fourier transforms infrared spectra, and X-ray photoelectron spectroscopy. Due to the catechol and amine groups, the polydopamine (PDA) polymer provided multiple interactions in combination with RhB. The removal ratios of the RhB by Fe۳O۴/PDAwere all above ۹۸% at the optimum experimental conditions, suggesting that the Fe۳O۴/PDAnanocomposite was an excellent sorbent for acid dyes removal from aqueous solution. The kinetic studies revealed that sorption follows a pseudo-second-order kinetic model which indicates chemisorption between sorbent and adsorbate molecules. The Langmuir adsorption models were applied to describe the equilibrium isotherms, and the isotherm constants were also determined. The maximum adsorption capacity derived from the Langmuir model was ۱۹۵.۳ mg/g.

نویسندگان

Ali Baghban

Department of Chemistry, Faculty of Science, Payame Noor University, P.O. Box ۱۹۳۹۵-۳۶۹۷ Tehran, I.R. IRAN

mohammad jabbari

Department of Chemistry, Faculty of Science, Payame Noor University, P.O. Box ۱۹۳۹۵-۳۶۹۷ Tehran, I.R. IRAN

Elaheh Rahimpour

Department of Chemistry, Faculty of Science, Payame Noor University, P.O. Box ۱۹۳۹۵-۳۶۹۷ Tehran, I.R. IRAN

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