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نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
المذيبات المزينة بجزيئات متانهية الصغر من أكاسيد المنجنيز وأكاسيد الحديديك لإزالة صبغة الكريستال البنفسجى من المحاليل المائية
MWCNTs decorated with Mn0.8Zn0.2Fe2O4 nanoparticles for removal of crystal-violet dye from aqueous solutions
 
الموضوع : علوم البيئة 
لغة الوثيقة : الانجليزية 
المستخلص : In the present study, a simple, economic and environmentally friend method was utilized for the produc-tion of multi-walled carbon nanotubes (MWCNTs) decorated with Mn0.8Zn0.2Fe2O4 nanoparticles, synthe-sized via recycling process of Zn–C battery. The chemical composition and structure of the MWCNTs/Mn0.8Zn0.2Fe2O4 composite were confirmed by X-ray diffraction and Fourier transform infrared measure-ments. The morphology as well as the decoration process was characterized using transmission electron microscopy. The results showed that the MWCNTs are homogeneously decorated with cubic loosely agglomerated ferrite particles having mean crystallite size of 20 nm. An appropriate decoration mechan-ism was suggested and discussed. The hysteresis measurements exhibited reasonable magnetic charac-teristics for the obtained composite which facilitate its separation from their dispersed solution using normal magnet. Surface area measurement indicates relatively large specific surface enhances its use in adsorption process. The adsorption capacity of the entire composite was investigated using crystal vio-let dye. The effect of composite mass, contact time, solution pH and solution temperature on the adsorp-tion process was investigated. The adsorption process was found to follow a pseudo-second-order model. The calculated adsorption thermodynamic parameters (DG, DH and DS) suggested the spontaneity of the thermodynamically favorable adsorption process. 
ردمد : 1385-8947 
اسم الدورية : Chemical Engineering Journal 
المجلد : 255 
العدد : 1 
سنة النشر : 1435 هـ
2014 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Sunday, October 19, 2014 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
M.A. GabalGabal, M.A. باحث mgabalabdonada@yahoo.com
E.A. Al-HarthyAl-Harthy, E.A. باحث  
Y.M. Al AngariAl Angari, Y.M. باحث  
M. Abdel SalamSalam, M. Abdelباحث  

الملفات

اسم الملفالنوعالوصف
 37399.pdf pdfMWCNTs decorated with Mn0.8Zn0.2Fe2O4 nanoparticles for removal of crystal-violet dye from aqueous solutions

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