کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
42117 45911 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Zr-doped TiO2 for enhanced photocatalytic degradation of bisphenol A
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Zr-doped TiO2 for enhanced photocatalytic degradation of bisphenol A
چکیده انگلیسی

Zr ions were successfully incorporated into the bulk lattice of TiO2 by a multi-step sol–gel process. The doping of Zr ions in TiO2 lattice reached about 30%. The Zr-doped TiO2 photocatalysts exhibited much higher photocatalytic efficiency than pure TiO2 in the degradation of bisphenol A (BPA) under UV irradiation and complete mineralization of BPA was achieved. The higher photocatalytic activity of Zr-doped TiO2 was attributed to gradually upward shift of the conduction bands with increasing Zr content, thus resulting in a stronger reduction power of photogenerated electrons and contributing to the improved photoactivity. The effects of initial BPA concentration, irradiation intensity, initial solution pH and inorganic anions on the photocatalytic performance of Zr-doped TiO2 were studied. The photodegradation of BPA was found to be optimized under a basic condition at pH 9. The addition of PO43−and SO42− anions enhanced the photocatalytic reaction but NO3−and Cl− ions showed detrimental effects.

Zr ions were successfully incorporated into the bulk lattice of TiO2 by a multi-step sol–gel process, which induced upward shift of conduction band. The Zr-doped TiO2 exhibited significantly higher photocatalytic degradation efficiency of bisphenol A than pure TiO2. The influences of initial concentration, irradiation intensity, solution pH and inorganic anions on the performance of Zr-doped TiO2 were studied.Figure optionsDownload high-quality image (80 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 375, Issue 1, 26 February 2010, Pages 107–115
نویسندگان
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