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Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution
المؤلفون المشاركون
Samoila, Petrisor
Cojocaru, Corneliu
Cretescu, Igor
Nica, Valentin
Sacarescu, Liviu
Harabagiu, Valeria
Stan, Catalina Daniela
المصدر
العدد
المجلد 2015، العدد 2015 (31 ديسمبر/كانون الأول 2015)، ص ص. 1-13، 13ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2015-06-07
دولة النشر
مصر
عدد الصفحات
13
التخصصات الرئيسية
الملخص EN
Nanosized spinel ferrites MFe2O4 (M = Ni, Co, and Zn) have been prepared by sol-gel autocombustion method using citric acid as a fuel agent.
The materials are characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM).
The spinel ferrites have been applied for Congo-Red (CR) dye adsorption using batch technique.
Different kinetic and equilibrium models have been fitted by nonlinear regression to analyze the adsorption data.
In accordance with Langmuir isotherm, the maximum adsorption capacity at 293 K is 14.06 mg/g for CoFe2O4 and 17.13 mg/g for NiFe2O4.
The values of mean free energy determined from Dubinin-Radushkevich isotherm are higher than 8 (kJ mol−1), indicating a chemisorption mechanism.
Based on the calculated thermodynamic parameters (free energy, enthalpy, and entropy) the adsorption of CR onto ferrites is a spontaneous and endothermic process.
Response surface methodology has been applied to construct the multiple regression models for prediction of the adsorption capacity and removal efficiency.
The model-based optimization has been performed using genetic algorithms and desirability function approach.
The single-objective optimization has yielded a maximum value of color removal efficiency of 98.995%, using NiFe2O4 adsorbent.
The multiobjective optimization has resulted in the improvement of both removal efficiency and adsorption capacity.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Samoila, Petrisor& Cojocaru, Corneliu& Cretescu, Igor& Stan, Catalina Daniela& Nica, Valentin& Sacarescu, Liviu…[et al.]. 2015. Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution. Journal of Nanomaterials،Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1069258
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Samoila, Petrisor…[et al.]. Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution. Journal of Nanomaterials No. 2015 (2015), pp.1-13.
https://search.emarefa.net/detail/BIM-1069258
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Samoila, Petrisor& Cojocaru, Corneliu& Cretescu, Igor& Stan, Catalina Daniela& Nica, Valentin& Sacarescu, Liviu…[et al.]. Nanosized Spinel Ferrites Synthesized by Sol-Gel Autocombustion for Optimized Removal of Azo Dye from Aqueous Solution. Journal of Nanomaterials. 2015. Vol. 2015, no. 2015, pp.1-13.
https://search.emarefa.net/detail/BIM-1069258
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1069258
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
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