کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5370485 1388499 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface effect of natural zeolite (clinoptilolite) on the photocatalytic activity of TiO2
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Surface effect of natural zeolite (clinoptilolite) on the photocatalytic activity of TiO2
چکیده انگلیسی

The surface interaction between TiO2 and natural zeolite, clinoptilolite, has been investigated by means of transmission electron microscope (TEM), atom force microscope (AFM), X-ray diffractometer (XRD), diffuse reflectance infrared Fourier transform (DRIFT) and far Fourier transform infrared ray (FTIR) spectroscopy. And the photocatalytic degradation (PCD) rate of methyl orange (MO), a model of recalcitrant azo dye, in aqueous system has been measured to compare the photocatalytic activities of different photocatalysts. A model has been carried out to explain the incorporation between TiO2 particles and natural zeolite. The results show that the TiO2 particles loaded on zeolite are 50 nm or so, smaller than the pure one, and combine with zeolite via chemical force. Since the reserved adsorption ability and the existence of electron trapper, the TiO2-zeolite performed more efficient at low initial concentration and in the later period of PCD process, as compared with pure TiO2 nanopowders.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 252, Issue 5, 15 December 2005, Pages 1410-1416
نویسندگان
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