نانوکامپوزیت MXene/MIL-101 با ریخت هشت‌وجهی و میله‌ای: سنتز و کاربرد در حذف رودامین‌بی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه پژوهشی محیط زیست، پژوهشگاه علوم و تکنولوژی پیشرفته و علوم محیطی، دانشگاه تحصیلات تکمیلی صنعتی و فناوری پیشرفته، کرمان، ایران، صندوق پستی: 117- 76315

2 دانشکده شیمی، دانشگاه علم و صنعت ایران، تهران، ایران، صندوق پستی: ۱۳۱۱۴-۱۶۸۴۶

10.30509/jcst.2026.167811.1286

چکیده

در این پژوهش، نانوکامپوزیت MXene/MIL-101 با دو ریخت متفاوت هشت‌وجهی (روش سلووترمال) و میله‌ای (روش تقطیر برگشتی) سنتز شد. محصولات سنتز شده با استفاده از آزمون‌های XRD، FT-IR و SEM شناسایی شدند. نتایج حاصل از آزمون‌های ساختاری نشان داد که روش سنتز تأثیر قابل‌توجهی بر ریخت نانوکامپوزیت‌ها دارد، به‌طوری‌که سنتز سلووترمال منجر به تشکیل ذرات هشت‌وجهی شد، در حالی که روش تقطیر برگشتی ذرات میله‌ای ایجاد کرد. آزمایش‌های جذب رودامین‌بی نشان دادند که هر دو نانوکامپوزیت عملکرد بالایی در حذف رنگزا دارند. همچنین، نانوکامپوزیت با ریخت هشت‌وجهی بازده حذف بالاتری (حدود 93 درصد) نسبت به ریخت میله‌ای (حدود 85 درصد) نشان داد. بیشینه ظرفیت جذب تحت شرایط بهینه (از قبیل 7pH=، مقدار جاذب=05/0 گرم و زمان تماس=50 دقیقه) مقدار mg g-173/۶۱ برای جاذب سنتز‌شده به روش سلووترمال به‌دست آمد. داده‌های سینتیکی با استفاده از معادله شبه مرتبه اول و شبه دوم لاگرگرن مورد تجزیه و تحلیل قرار گرفت و مدل شبه مرتبه دوم بهترین تناسب را برای مطالعات سینتیکی نشان داد (99/0> R2). علاوه بر این، بررسی قابلیت استفاده مجدد نشان داد که جاذب پیشنهادی پس از شش چرخه جذب و بازیابی همچنان عملکرد مطلوب خود را حفظ می‌کند. در نهایت، یافته‌های این تحقیق نشان می‌دهد که نانوکامپوزیت MXene/MIL-101 سنتز شده به روش سلووترمال، جاذبی کارآمد برای حذف رنگ‌های آلی بوده و می‌تواند در توسعه فناوری‌های نوین تصفیه آب نقش موثری ایفا کند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

MXene/MIL-101 Nanocomposite with Octahedral and Rod-like Morphology: Synthesis and Application in Rhodamine B Removal

نویسندگان [English]

  • Maryam Fayazi 1
  • Saeideh Eslaminejad 2
1 Department of Environment, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, P.O. Box: 76315-117, Kerman, Iran
2 Department of Chemistry, Iran University of Science and Technology, P.O. Box: 16846-13114, Tehran, Iran
چکیده [English]

In this study, MXene/MIL-101 nanocomposites with two different morphologies, octahedral (via solvothermal method) and rod-like (via reflux method), were synthesized. The synthesized products were characterized using XRD, FTIR, and SEM analyses. The results of the structural analyses showed that the synthesis method has a significant effect on the morphology of the nanocomposites, such that the solvothermal synthesis led to the formation of octahedral particles, while the reflux method produced rod-like particles. Rhodamine B adsorption experiments demonstrated that both nanocomposites exhibit high performance in dye removal. Furthermore, the nanocomposite with octahedral morphology showed a higher removal efficiency (about 93%) compared to the rod-like morphology (about 85%). The maximum adsorption capacity under optimal conditions (i.e., pH = 7, adsorbent dosage = 0.05 g, and contact time = 50 min) was found to be 61.73 mg g⁻¹ for the adsorbent synthesized via the solvothermal method. The kinetic data were analyzed using the Lagergren pseudo-first-order and pseudo-second-order equations, and the pseudo-second-order model showed the best fit for the kinetic studies (R² > 0.99). Moreover, the reusability study showed that the proposed adsorbent retains its favorable performance even after six adsorption-regeneration cycles. Finally, the findings of this study indicate that the MXene/MIL-101 nanocomposite synthesized via the solvothermal method is an efficient adsorbent for the removal of organic dyes and can play an effective role in the development of novel water treatment technologies.

کلیدواژه‌ها [English]

  • MXene/MIL
  • 101 nanocomposite Rhodamine B Water treatment Removal Morphology

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