| 镧掺杂的二氧化钛纳米颗粒的合成、结构表征及光催化性能 |
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| 引用本文： | 魏贵明.镧掺杂的二氧化钛纳米颗粒的合成、结构表征及光催化性能[J].盐湖研究,2012,20(3):48-53. |
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| 作者姓名： | 魏贵明 |
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| 作者单位： | 安阳师范学院图书馆,河南安阳,455000 |
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| 基金项目： | 教育部留学回国人员启动基金项目(1561号);河南省科技厅国际合作项目(114300510039);河南省教育厅自然科学研究计划项目(2010A150001、2011A430002) |
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| 摘 要： | 以无水乙醇为溶剂、1-丁基-3-甲基咪唑四氟硼酸盐(Bmim]BF4)离子液体为表面活性剂,以钛酸四丁酯、六水合硝酸镧为原料,采用共沉淀法制备了不同掺镧量的La-TiO2光催化材料。采用X-射线衍射仪(XRD)、傅里叶变换红外光谱仪(FTIR)、场发射扫描电镜(FESEM)、差热-热重分析仪(TG-DSC)、紫外-可见吸收光谱仪(UV-vis)、比表面及孔隙度分析仪(BET)对其结构、形貌、热稳定性、光学性能及比表面积进行表征。所制备产品的光催化性能在紫外光下进行了光催化降解甲基橙实验,实验结果表明在离子液体的量为0.5mL,掺杂镧量为5%的TiO2纳米材料对甲基橙的降解效果相对较好,降解率最高达到98.73%。
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| 关 键 词： | TiO2 镧 共沉淀法 光催化 表征 |
Synthesis,Characterization and Photocatalytic Activity of La-Doped Nanometer TiO2 Catalysts |
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| WEI Gui-ming.Synthesis,Characterization and Photocatalytic Activity of La-Doped Nanometer TiO2 Catalysts[J].Journal of Salt Lake Research,2012,20(3):48-53. |
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| Authors: | WEI Gui-ming |
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| Institution: | WEI Gui-ming(Library of Anyang Normal University,Anyang,455000,China) |
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| Abstract: | In the solvent of ethanol,La doped nanoscale TiO2 photocatalyst were prepared by the coprecipitation method with 1-butyl-3-methyl imidazolium tetrafluoroborate as surfactant,tetrabutyl titanate and Lanthanum nitrate as starting materials.The structure,morphology,element composition,thermal stability,optical property and surface area were characterized by XRD,FTIR FESEM,EDS,TG-DSC,UV-vis and BET.The liquid-phase photocatalytic degradation of methyl orange was used to test the photocatalytic activity of the synthesized materials.The experimental results showed that the catalytic activities of La-TiO2 nanometer material were better in comparison with the pure TiO2 products.When the mole ratio of doping amount is 5%,La-doped nanometer TiO2 shows the better catalytic behavior with catalytic efficiency up to 98.73%. |
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| Keywords: | TiO2 La Coprecipitation Photocatalysis Characterization |
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