Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7696395 | Journal of Rare Earths | 2018 | 12 Pages |
Abstract
Ball milling method was applied to prepare Lu3+/TiO2 photocatalysts. The catalysts were characterized with X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), UV-visible diffuse reflectance spectra (UV-vis DRS), energy dispersive X-ray spectrometer (EDS), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) method. The photocatalytic activities were determined by the degradation of methylene blue (MB) equipped with a 300Â W medium pressure mercury lamp. Results show that the first order reaction rate constants of Lu3+/TiO2 and pure TiO2 are 0.0565 and 0.0263Â minâ1, respectively, which both were evaluated under the condition of catalysts loading of 0.2Â g/L, initial concentration of 25Â mg/L for MB, mole ratio of Lu3+/TiO2 of 1.5% and milling time of 4Â h. The average crystal sizes of 1.5Â mol% Lu3+/TiO2 and pure TiO2 are 18.7 and 19.3Â nm, respectively.
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Authors
Di Wu, Chen Li, Qiushi Kong, Zaifeng Shi, Dashuai Zhang, Lili Wang, Lizhi Han, Xiaopeng Zhang, Qiang Lin,