کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
625428 | 1455428 | 2010 | 6 صفحه PDF | دانلود رایگان |
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.
Journal: Desalination - Volume 263, Issues 1–3, 30 November 2010, Pages 258–263