کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
625428 1455428 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
H2O2 modified surface of TiO2/fly-ash cenospheres and enhanced photocatalytic activity on methylene blue
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
H2O2 modified surface of TiO2/fly-ash cenospheres and enhanced photocatalytic activity on methylene blue
چکیده انگلیسی

In this study, the TiO2/fly-ash cenospheres were prepared via sol–gel method, and the surface of TiO2/fly-ash cenospheres was further modified by hydrogen peroxide (H2O2). Scanning electron microscopy (SEM), X-ray diffraction (XRD), UV–vis diffuse reflectance spectra (UV–vis DRS), photoluminescence (PL) and X-ray photoelectron spectroscopy (XPS) were applied to characterize structure, performance and chemical composition of as-prepared samples. The photocatalytic activity of as-prepared samples was evaluated by degradation of methylene blue under visible light irradiation. The results indicate that the modified phototcatalyst of TiO2/fly-ash cenospheres is effectively improved the absorption of light. The photocatalytic degradation of methylene blue is enhanced under visible light irradiation, which the degradation rate is higher 42.5% than the untreated TiO2/fly-ash cenospheres with H2O2. Moreover, the simple way to modified TiO2/fly-ash cenospheres and enhancing the photocatalytic activity is better for practical application.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 263, Issues 1–3, 30 November 2010, Pages 258–263
نویسندگان
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