کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1333480 | 979080 | 2010 | 6 صفحه PDF | دانلود رایگان |
Using composite surfactant templates, polyoxyethylene (20) oleyl ether (Brij98) and cetyl trimethyl ammonium bromide (CTAB), as structure-directing agents, N and La co-doped mesoporous TiO2 complex photocatalysts were synthesized successfully. The micromorphology of co-doped mesoporous TiO2 samples was characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transformed infrared spectroscopy (FT-IR), energy-dispersive X-ray spectrometer (EDS) and N2 adsorption–desorption measurements. The results indicated that the complex photocatalyst prepared with a molar ratio of Brij98:CTAB=1:1 showed a uniform pore size of ca. 7 nm and a high specific surface area (SBET) of 279.0 m2 g−1, and exhibited the highest photocatalytic activity for degradation of papermaking wastewater under ultra-violet light irradiation. The chemical oxygen demand (CODcr) percent degradation was about 73% in 12 h and chroma percent degradation was 100% in 8 h.
CODcr percent degradation of papermaking wastewater is about 73% after 12 h over the co-doped mesoporous TiO2 prepared with a molar ratio of Brij98:CTAB=1:1.Figure optionsDownload as PowerPoint slide
Journal: Journal of Solid State Chemistry - Volume 183, Issue 6, June 2010, Pages 1394–1399