| Pr-TiO_2光催化剂的制备与性能研究 |
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| 引用本文： | 吴晶,周文芳,高攀,朱忠其,柳清菊.Pr-TiO_2光催化剂的制备与性能研究[J].功能材料,2010,41(4). |
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| 作者姓名： | 吴晶 周文芳 高攀 朱忠其 柳清菊 |
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| 作者单位： | 云南大学,云南省高校纳米材料与技术重点实验室,云南,昆明,650091 |
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| 基金项目： | 国家自然科学基金资助项目(50862009);;教育部新世纪优秀人才支持计划资助项目(NCET-04-0915) |
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| 摘 要： | 采用溶胶-凝胶法制备了稀土元素Pr掺杂的纳米TiO2光催化剂(Pr-TiO2)。通过XRD、FT-IR、UV-Vis、TEM等对Pr-TiO2样品进行了表征和分析,并以亚甲基蓝(MB)作为目标降解物,考察了不同热处理温度及不同掺杂量的Pr-TiO2对MB的光催化降解效果。结果表明,Pr掺杂纳米TiO2的晶型为锐钛矿相和金红石相的混晶相,Pr的掺入提高了TiO2光催化活性。当热处理温度为500℃,在pH值为2.5,Pr掺杂量为n(Pr):n(TiO2)=1:300的条件下制备的光催化剂的催化活性显著高于DegussaP25。
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| 关 键 词： | Pr掺杂 纳米TiO2 光催化 |
Preparation and properties on rare-earth element praseodymium doped nano-titanium dioxide photocatalyst |
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| WU Jing,ZHOU Wen-fang,GAO Pan,ZHU Zhong-qi,LIU Qing-ju.Preparation and properties on rare-earth element praseodymium doped nano-titanium dioxide photocatalyst[J].Journal of Functional Materials,2010,41(4). |
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| Authors: | WU Jing ZHOU Wen-fang GAO Pan ZHU Zhong-qi LIU Qing-ju |
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| Affiliation: | Yunnan Key Laboratory of Nanomaterials & Technology;Yunnan University;Kunming 650091;China |
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| Abstract: | The nano-TiO2 doped with Pr was prepared by sol-gel method.The samples were analyzed by X-ray diffraction (XRD),FT-IR,UV-Vis,TEM,et al.The photocatalytic activity of Pr-TiO2 was investigated at different doping dosage and different calcinated temperatures by measuring the degradation rate of methyl blue(MB) under the irradiation of fluorescent lamp.The results show that crystal phase of Pr-TiO2 sample is a mixed phase of anatase and rutile.The existence of the doped element Pr increase the photocatalytic ac... |
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| Keywords: | praseodymium doping nano-titanium dioxide photocatalysis |
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