| La和Cu共掺纳米TiO_2光催化转化CO_2研究 |
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| 引用本文： | 卫静,谭欣,杜菲菲,于涛,赵林.La和Cu共掺纳米TiO_2光催化转化CO_2研究[J].天津大学学报(自然科学与工程技术版),2012(1):75-80. |
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| 作者姓名： | 卫静 谭欣 杜菲菲 于涛 赵林 |
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| 作者单位： | 天津大学环境科学与工程学院;济南大学资源与环境学院;天津大学化工学院 |
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| 基金项目： | 国家自然科学基金资助项目(20776103) |
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| 摘 要： | 采用溶胶-凝胶法制备了La、Cu共掺杂的纳米TiO2粉体,并用X射线衍射(XRD)、高分辨透射电镜(HR-TEM)和X射线光电子能谱(XPS)等技术表征了La/Cu/TiO2催化材料的结构和形貌.研究了不同La元素掺杂量对CO2还原产物甲醛生成量的影响.结果表明,质量分数0.1%La/0.6%Cu/TiO2材料的光催化还原CO2性能最佳,以0.2,mol/L NaOH作为还原剂、300,W高压汞灯(主波长为365,nm)为辐照光源、光催化反应6,h时,甲醛的生成量最大,可达304.49,μmol/gcat.
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| 关 键 词： | 光催化还原 TiO2 La Cu CO2 甲醛 |
CO2 Photoconversion Activities of La and Cu Co-Doped TiO2 Nanoparticles |
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| WEI Jing,TAN Xin,DU Fei-fei,YU Tao,ZHAO Lin.CO2 Photoconversion Activities of La and Cu Co-Doped TiO2 Nanoparticles[J].Journal of Tianjin University(Science and Technology),2012(1):75-80. |
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| Authors: | WEI Jing TAN Xin DU Fei-fei YU Tao ZHAO Lin |
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| Institution: | 1,3(1.School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,China;2.School of Resources and Environment,University of Jinan,Jinan 250022,China;3.School of Chemical Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | A series of La and Cu co-doped TiO2 nanoparticles were synthesized via sol-gel method.The crystal struc-tures,morphologies and chemical properties were characterized using X-ray diffraction(XRD),high resolution transmission electron microscopy(HR-TEM)and X-ray photoelectron spectroscopy(XPS).The effects of different La doping amounts on the reaction of CO2 photoconversion were investigated.The results showed that 0.1%La/0.6%Cu/TiO2 performed the highest photocatalytic activity,which yielded 304.49 μmol/gcat formaldehyde after 6 h of UV illumination. |
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| Keywords: | photoconversion TiO2 La Cu CO2 formaldehyde |
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