تفاصيل الوثيقة

نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Preparation and characterisation of Pd-TiO2-hydroxyapatite nanoparticles for the photocatalytic degradation of cyanide under visible light
Preparation and characterisation of Pd-TiO2-hydroxyapatite nanoparticles for the photocatalytic degradation of cyanide under visible light
 
لغة الوثيقة : الانجليزية 
المستخلص : Hydroxyapatite nanoparticles were successfully synthesised by an ultrasonic irradiation method. Pd-TiO2-hydroxyapatite nanoparticles with 3 wt% of Pd and 25 wt% of TiO2 were successfully synthesised by an impregnation method. For comparison, Pd-TiO2 (3 wt% Pd) has been also synthesised by an impregnation method. The catalytic performance was evaluated by photocatalytic oxidation of cyanide under visible light irradiation. Extended X-ray absorption fine structure (EXAFS) measurements revealed the presence of the peaks assigned to the Pd-Pd bond at approximately 2.54 angstrom. Terephthalic acid assay confirmed formation of hydroxyl radicals in cyanide solution treated with photocatalysts and the amount of the formed hydroxyl radials in the case of Pd-TiO2-hydroxyapatite nanoparticle is the highest than that of Pd-TiO2 and TiO2 nanoparticles. The improved photocatalytic activity of the Pd-TiO2-HAP systems is due to the absorption of radiation in the visible light region, the small recombination rate of the electron-hole pair, and the high surface area. The photocatalytic degradation of cyanide was found to follow first-order kinetics. Recycling experiments confirmed the relative stability of the catalyst 
ردمد : 0926-860X 
اسم الدورية : APPLIED CATALYSIS A-GENERAL 
المجلد : 464 
العدد : 464 
سنة النشر : 1434 هـ
2013 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Tuesday, July 25, 2017 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
R MohamedMohamed, R باحث  
E BaeissaBaeissa, E باحث  

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