| 离子液体中钴离子掺杂纳米二氧化钛的制备及其光催化性能研究 |
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| 引用本文： | 彭延治,毛龙满,邓芳.离子液体中钴离子掺杂纳米二氧化钛的制备及其光催化性能研究[J].江西科学,2012,30(5):579-583. |
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| 作者姓名： | 彭延治 毛龙满 邓芳 |
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| 作者单位： | 1. 江西省环境保护科学研究院,江西南昌,330029
2. 南昌航空大学,江西南昌,330034 |
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| 摘 要： | 以钛酸四正丁酯为原料,以离子液体溴化1-乙基-3-甲基咪唑以为反应介质,制备未掺杂TiO2(TiO2-IL)和钴离子掺杂的纳米TiO2(Co/TiO2-IL),并用XRD、UV-Vis、光生电流等进行表征。以邻硝基苯酚作为降解目标,在紫外光下研究Co/TiO2-IL的光催化活性。结果表明,Co/TiO2-IL的光催化活性高于没有离子液体的反应介质中制备的Co/TiO2,这表明了离子液体可以提高TiO2的光催化活性。而且,研究了溶液的pH对Co/TiO2-IL催化活性的影响,Co/TiO2-IL在酸性条件下具有更好的光催化活性。
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| 关 键 词： | 二氧化钛 离子液体 光催化活性 邻硝基苯酚 |
Cobalt Ion Doped Titanium Dioxide Nanoparticles Prepared in Ionic Liquid and Their Photocatalytic Activity |
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| PENG Yan-zhi,MAO Long-man,DENG Fang.Cobalt Ion Doped Titanium Dioxide Nanoparticles Prepared in Ionic Liquid and Their Photocatalytic Activity[J].Jiangxi Science,2012,30(5):579-583. |
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| Authors: | PENG Yan-zhi MAO Long-man DENG Fang |
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| Institution: | 1. Jiangxi Academy of Environmental Sciences ,Jiangxi Nanchang 330029 PRC; 2. Nanchang Hangkong University, Jiangxi Nanchang 330034 PRC ) |
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| Abstract: | Cobalt ion doped titanium dioxide nanoparticles （Co/TiO2-IL） were prepared in ionic liq- uid 1-ethyl-3-methylimidazoliurn bromide using n-butyl titanate as raw material, and were character- ized by X-ray diffraction, UV-Vis spectroscopy and photo-generated current. The photocatalytic aci- tivity of Co/TiO2-IL were evaluated by the degradation of o-nitrophenol under UV light illumination. The photoeatalytic activity of Co/TiO2-IL is higher that the samples which is prepared in the reaction media without ionic liquid, indicating that ionic liquid can enhance the photocatalytic acitivity. More- over, the effect of pH on the photocatalytic acitivity of Co/TiO2-IL was investigated and result showed that Co/TiO2-IL exhibits higher photocatalytic acitivity in acidic solution than neutral or alkaline en- vironment. |
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| Keywords: | Titanium dioxide Ionic liquid Photocatalytic activity O-nitrophenol |
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