| 锐钛矿型纳米TiO2溶胶的低温制备及其光催化活性评价 |
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| 引用本文： | 彭人勇,吕新莲.锐钛矿型纳米TiO2溶胶的低温制备及其光催化活性评价[J].湿法冶金,2006,25(1):22-25. |
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| 作者姓名： | 彭人勇 吕新莲 |
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| 作者单位： | 青岛科技大学,材料与环境科学学院,山东,青岛,266042 |
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| 摘 要： | 研究了以四氯化钛和氨水为原料,在常温下通过两步法制备TiO2溶胶。TEM和XRD分析表明,TiO2溶胶粒径小于10 nm,并存在一定数量的锐钛矿型晶相结构。自然光照条件下,通过对亚甲基蓝水溶液的光催化降解试验和对新鲜馒头的防霉试验,考察了TiO2溶胶的光催化活性,同时检验了TiO2溶胶的稳定性。结果表明,TiO2溶胶具有较好的光催化活性和稳定性。
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| 关 键 词： | 二氧化钛 溶胶 低温 制备 光催化活性 |
| 文章编号： | 1009-2617（2006）01-0022-04 |
| 收稿时间： | 2005-09-14 |
| 修稿时间： | 2005年9月14日 |
Preparation of Anatase Type Nanosized TiO2 Sol at Low Temperature and Evaluation on Its Photocatalytic Property |
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| PENG Ren-yong,Lü Xin-lian.Preparation of Anatase Type Nanosized TiO2 Sol at Low Temperature and Evaluation on Its Photocatalytic Property[J].Hydrometallurgy of China,2006,25(1):22-25. |
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| Authors: | PENG Ren-yong Lü Xin-lian |
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| Abstract: | Nanocrystalline photocatalytic active titanium dioxide(TiO_2) sol was prepared by two steps with precursor titanium tetrachloride at low temperature.The sol samples were characterized by TEM and XRD.The results indicated that particle diameter of TiO_2 sol prepared in this way is less 10(nanometers),and the sol has anatase crystal phase.Under plenteous sunshine,the photocatalytic(activity) of TiO_(2) sol was tested by(degradation) color tests of methylene blue solution with TiO_2 sol concentration of 0.2% and antibiosis tests on fresh steamed bread.In addition,the stability test of TiO_2 sol was carried out also.The results showed that the sol has high photocatalytic behaviour and stability. |
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| Keywords: | titanium dioxide sol low temperature preparation photocatalytic activity |
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