| 微乳液法制备超细K2Ln2Ti3O10及其光催化活性研究 |
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| 引用本文： | 李伟,张莉莉,杨绪杰,陆路德,汪信.微乳液法制备超细K2Ln2Ti3O10及其光催化活性研究[J].中国稀土学报,2006,24(5):571-575. |
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| 作者姓名： | 李伟 张莉莉 杨绪杰 陆路德 汪信 |
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| 作者单位： | 南京理工大学化工学院材料化学研究室,江苏,南京,210094 |
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| 摘 要： | 以钛酸四丁酯、氢氧化钾和镧系金属氧化物为原料。采用微乳液法制备了系列超细K2Ln2Ti3O10（Ln=La．Ce,Pr．Nd，Sm，Eu，Gd）光催化剂。并考察了其光催化活性。通过X射线衍射（XRD）、透射电镜（TEM）和紫外可见吸收光谱（UV—Vis）对其进行了表征。结果表明：用微乳液法制备催化剂可以在较低的温度下（900℃），用较短的烧结时间（3h）合成结晶度高、粒径较小（200Mm）的K2Ln2Ti3O10钙钛矿型层状结构化合物。催化剂在紫外光和可见光条件下均具有光催化降解甲基橙的活性。紫外光条件下可以明显提高光催化降解活性，降解率达到60％。
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| 关 键 词： | 层状镧钛酸盐 微乳液 光催化 甲基橙 稀土 |
| 文章编号： | 1000-4343（2006）05-0571-05 |
| 收稿时间： | 03 12 2006 12:00AM |
| 修稿时间： | 2006-03-122006-05-15 |
Synthesis of Ultrafine K2Ln2Ti3O10 by Microemulsion Method and Its Photoactivity Research |
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| Li Wei,Zhang Lili,Yang Xujie,Lu Lude,Wang Xin.Synthesis of Ultrafine K2Ln2Ti3O10 by Microemulsion Method and Its Photoactivity Research[J].Journal of the Chinese Rare Earth Society,2006,24(5):571-575. |
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| Authors: | Li Wei Zhang Lili Yang Xujie Lu Lude Wang Xin |
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| Institution: | Materials Chemistry Laboratory, Nanjing University of Science and Technology, Nanjing 210094, China |
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| Abstract: | A series of ultrafine K_2Ln_2Ti_3O_(10)(Ln=La,Ce,Pr,Nd,Sm,Eu,Gd)photocatalyst was prepared by microemulsion method based on tetrabutyl titanate reacting with potassium hydroxide and lanthanumoxide.The obtained products were characterized by XRD,TEM and UV-Vis spectra.These results indicate that highly ultrafine K_2Ln_2Ti_3O_(10) can be accessible at lower fabricating temperature and shorter reation time by this approach.In addition,the investigation on their catalytic behavior based on the degradation of methyl orange under UV-Vis light suggests that the degradation rate can reach up to 60%. |
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| Keywords: | layered lanthanum titanate microemulsion photocatalyst methyl orange rare earths |
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