| 制备不同稀土掺杂的纳米氧化钛光催化剂及其光催化活性 |
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| 引用本文： | 周武艺,唐绍裘,张世英,周锡荣,万隆.制备不同稀土掺杂的纳米氧化钛光催化剂及其光催化活性[J].硅酸盐学报,2004,32(10):1203-1208. |
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| 作者姓名： | 周武艺 唐绍裘 张世英 周锡荣 万隆 |
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| 作者单位： | 湖南大学材料科学与工程学院,长沙,410082;长沙大学应用化学与环境科学系,长沙,410003 |
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| 摘 要： | 以钛酸丁酯为原料，通过溶胶-凝胶法合成了Dy2O3-TiO2，CeO2-TiO2和Gd2O3-TiO2光催化剂。以甲基橙和亚甲基蓝为目标降解物，研究了3种复合光催化剂的光催化活性。通过紫外可见光光谱分析发现：3种光催化剂对不同降解物均表现出一定的光催化活性。掺杂质量分数(下同)为1．25％Gd2O3的光催化剂对甲基橙的降解效率较高，掺杂1．25％CeO2的光催化剂对亚甲基蓝具有较好的降解活性。因此，掺杂不同稀土氧化物的纳米TiO2光催化剂对不同有机物具有选择性降解活性。
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| 关 键 词： | 纳米二氧化钛 稀土掺杂 光催化降解 |
| 文章编号： | 0454-5648(2004)10-1203-06 |
| 修稿时间： | 2003年11月19 |
PREPARATION AND PHOTOCATALYTIC PROPERTIES OF NANO-TiO2 PHOTOCATALYSTS DOPED WITH VARIOUS RARE EARTH |
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| ZHOU Wuyi.PREPARATION AND PHOTOCATALYTIC PROPERTIES OF NANO-TiO2 PHOTOCATALYSTS DOPED WITH VARIOUS RARE EARTH[J].Journal of The Chinese Ceramic Society,2004,32(10):1203-1208. |
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| Authors: | ZHOU Wuyi |
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| Abstract: | Three kinds of catalysts including Dy_(2)O_(3)TiO_(2), CeO_(2)TiO_(2) and Gd_(2)O_(3)TiO_(2) were prepared by solgel method (using) tetrabutyl \ as starting materials. Photo catalytic properties of prepared photo catalysts were studied using methylene blue and methyl orange as degradation agents, respectively. Analysis of visible and ultraviolet spectra shows that all the three kinds of photo catalytists have a certain photo catalystic activity to different degradation agents. The photo catalyst doped with 1.25% (in mass,the same below) Gd_2O_3 can degrade the methyl orange effectively, while nano-TiO_(2) doped with 1.25% CeO_(2) displays an excellent activity in degrading the methylene blue.The photo catalysts doped with different rare earth show a selective photo activity to different degradation agents. |
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| Keywords: | nano-titanium dioxide rare earth doping photo catalytic degradation |
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