Photocatalytic activity of Lu3+/TiO2 prepared by ball milling method
来源期刊：JOURNAL OF RARE EARTHS2018年第8期
论文作者：Di Wu Chen Li Qiushi Kong Zaifeng Shi Dashuai Zhang Lili Wang Lizhi Han Lizhi Han Qiang Lin
文章页码：819 - 825
摘 要：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 300 W medium pressure mercury lamp. Results show that the first order reaction rate constants of Lu3+/TiO2 and pure TiO2 are0.0565 and 0.0263 min-1, respectively, which both were evaluated under the condition of catalysts loading of 0.2 g/L,initial concentration of 25 mg/L for MB, mole ratio of Lu3+/TiO2 of 1.5% and milling time of 4 h. The average crystal sizes of 1.5 mol% Lu3+/TiO2 and pure TiO2 are 18.7 and 19.3 nm, respectively.
Di Wu1,2，Chen Li1,2，Qiushi Kong1,2，Zaifeng Shi1,2，Dashuai Zhang1,2，Lili Wang1,2，Lizhi Han1,2，Xiaopeng Zhang1,2，Qiang Lin1,2
1. Key Laboratory of Water Pollution Treatment & Resource Reuse, Hainan Normal University2. College of Chemistry and Chemical Engineering, Hainan Normal University
摘 要：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 300 W medium pressure mercury lamp. Results show that the first order reaction rate constants of Lu3+/TiO2 and pure TiO2 are0.0565 and 0.0263 min-1, respectively, which both were evaluated under the condition of catalysts loading of 0.2 g/L,initial concentration of 25 mg/L for MB, mole ratio of Lu3+/TiO2 of 1.5% and milling time of 4 h. The average crystal sizes of 1.5 mol% Lu3+/TiO2 and pure TiO2 are 18.7 and 19.3 nm, respectively.
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