Photocatalytic activity of Lu^(3+)/TiO_2 prepared by ball milling method  

作　　者：Di Wu Chen Li Qiushi Kong Zaifeng Shi Dashuai Zhang Lili Wang Lizhi Han Xiaopeng Zhang Qiang Lin 

机构地区：[1]Key Laboratory of Water Pollution Treatment & Resource Reuse, Hainan Normal University [2]College of Chemistry and Chemical Engineering, Hainan Normal University

出　　处：《Journal of Rare Earths》2018年第8期819-825,共7页稀土学报（英文版）

基　　金：Project supported by the Natural Science Foundation of Hainan Province(20156242,217100,217101,20152033);Science and Technology Department of Hainan Province(ZDYF2017011)

摘　　要：Ball milling method was applied to prepare Lu^3＋/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 Lu^3＋/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 Lu^3＋/TiO2 of 1.5% and milling time of 4 h. The average crystal sizes of 1.5 mol% Lu^3＋/TiO2 and pure TiO2 are 18.7 and 19.3 nm, respectively.Ball milling method was applied to prepare Lu^3＋/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 Lu^3＋/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 Lu^3＋/TiO2 of 1.5% and milling time of 4 h. The average crystal sizes of 1.5 mol% Lu^3＋/TiO2 and pure TiO2 are 18.7 and 19.3 nm, respectively.

关 键 词：Ball milling method Rare earth LUTETIUM Titanium dioxide Methylene blue 

分 类 号：O643.36[理学—物理化学] TN16[理学—化学]