| La,Pr,Nd掺杂对纳米TiO2光催化性能的影响 |
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| 引用本文： | 邢磊,张前程,简丽,韩秀洁,樊彩梅.La,Pr,Nd掺杂对纳米TiO2光催化性能的影响[J].人工晶体学报,2010,39(3):724-729. |
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| 作者姓名： | 邢磊 张前程 简丽 韩秀洁 樊彩梅 |
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| 作者单位： | 内蒙古工业大学,呼和浩特,010051;中国航天科工集团第六研究院,呼和浩特,010010;太原理工大学,太原,030024 |
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| 基金项目： | 国家自然科学基金，内蒙古自然科学基金，内蒙古自治区人才基金 |
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| 摘 要： | 采用水解共沉淀法制备了稀土元素(La, Pr, Nd)掺杂量为0.5wt;～1.5wt;的TiO2光催化剂样本,并对其进行了XRD、TG-DTA、TEM、BET和UV-Vis表征.结果表明,所制备的TiO2光催化剂是以锐钛矿晶型为主的纳米颗粒,掺杂抑制了TiO2晶型由锐钛矿向金红石的转变,同时减小了晶粒尺寸、增大了比表面积、提高了吸光度,且使TiO2半导体的吸光范围发生了红移.将制得的TiO2光催化剂应用于溶液中草酸的降解反应,用K2MnO4滴定法分析降解效率,发现经掺杂改性后的TiO2样本光催化效率均有提高.其中,以掺杂量为1.0wt;的La掺杂样本具有最高的降解效率,与纯TiO2样本相比对草酸的降解率提高了近45;.
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| 关 键 词： | 水解共沉淀法 光催化 稀土掺杂TiO2 草酸 |
Effect of La,Pr,Nd Doping on the Photocatalytic Properties of Nano-TiO_2 |
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| XING Lei,ZHANG Qian-cheng,JIAN Li,HAN Xiu-jie,FAN Cai-mei.Effect of La,Pr,Nd Doping on the Photocatalytic Properties of Nano-TiO_2[J].Journal of Synthetic Crystals,2010,39(3):724-729. |
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| Authors: | XING Lei ZHANG Qian-cheng JIAN Li HAN Xiu-jie FAN Cai-mei |
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| Affiliation: | XING Lei1,ZHANG Qian-cheng1,JIAN Li1,HAN Xiu-jie2,FAN Cai-mei3 (1.Inner Mongolia University of Technology,Hohhot 010051,China,2.The 6th Academy of CASIC,Hohhot 010010,3.Taiyuan University of Technology,Taiyuan 030024,China) |
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| Abstract: | TiO2 doped with rare earth elements(La,Pr,Nd) was prepared by titanic chloride hydrolysis and coprecipitation method.The content of doped elements was varied from 0.5wt% to 1.5wt% with reference to mass fraction.The as-prepared TiO2 and the doped TiO2 were characterized by XRD,TG-DTA,TEM,BET and UV-Vis.The results show that pure TiO2 and doped TiO2 were the mixture of anatase and rutile,and the anatase was the main constituent;the doping hinders the crystal transformation and makes the TiO2 crystallite size... |
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| Keywords: | hydrolysis and coprecipitation method photocatalysis rare earth doped TiO2 oxalic acid |
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