تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
طرق تحفيزية لإزالى ألوان البنفسج البللورى فى محلول مائى به معلق من اكاسيد الزنك متناهيى الصغر تحت الضوء المرئى
Photocatalytic decolorization of crystal violet in aqueous nano-ZnO suspension under visible light irradiation
 
الموضوع : علوم البيئة 
لغة الوثيقة : الانجليزية 
المستخلص : Nanosized ZnO was prepared through hydrothermal process and characterized by scanning electron microscopy, X-ray diffraction and laser-induced breakdown spectra measurement techniques. The as-prepared nanosized ZnO was used to investigate the decolorization/degradation of crystal violet, a cationic dye which is extensively used in dyeing/textile industries, under visible light through adsorption studies of the dye solution with ZnO in the dark. The results show that the adsorption of CV on ZnO takes about 200 min to reach equilibrium, and the equilibrium time at a certain concentration of the dye seems to be independent of temperatures that are used for the preparation of ZnO samples. The adsorption data follow the pseudo-first-order kinetic model (Lagergren), and the adsorption pattern follows the Langmuir model. Prepared ZnO (300°C) was found to be a more efficient photocatalyst among others including pristine ZnO, to decolorize/degrade the dye. The decolorization rate is increased with the decreasing of the initial dye concentration and reached at a limiting value. The catalyst loading also influences the decolorization/degradation of the dye, and decolorization rate is increased with increasing the catalyst loading and reached at a limiting value. ZnO was found to be stable under visible light irradiation at solution pH = 6. The photocatalytic degradation of the dye followed zero-order kinetics, and the Langmuir-Hinshelwood mechanism was found to be valid. 
ردمد : 2193-8865 
اسم الدورية : Journal Of Nanostructure in Chemistry 
المجلد : 3 
العدد : 70 
سنة النشر : 1434 هـ
2013 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Monday, September 9, 2013 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
Md Ahsan HabibHabib, Md Ahsanباحث habibchemdu@yahoo.com
Muhammad MuslimMuslim, Muhammad باحث  
Md Tusan ShahadatShahadat, Md Tusanباحث  
Md Nazrul IslamIslam, Md Nazrulباحث  
اقبال اسماعيلIsmail, Iqbal باحثدكتوراه 
Tajmeri IslamIslam, Tajmeri باحث  
Abu Jafar MahmoodMahmood, Abu Jafar باحث ajmahmood10@gmail.com

الملفات

اسم الملفالنوعالوصف
 35969.pdf pdfPhotocatalytic decolorization of crystal violet in aqueous nano-ZnO suspension under visible light irradiation

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