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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 被引量：4

Cobalt Ion Doped Titanium Dioxide Nanoparticles Prepared in Ionic Liquid and Their Photocatalytic Activity
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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。 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.
作者 彭延治 毛龙满 邓芳
机构地区 江西省环境保护科学研究院 南昌航空大学
出处 《江西科学》 2012年第5期579-583,共5页 Jiangxi Science
基金 国家自然科学基金项目(51178216 50978132)
关键词 二氧化钛 离子液体 光催化活性 邻硝基苯酚 Titanium dioxide, Ionic liquid, Photocatalytic activity, O-nitrophenol
分类号 O614.4 [理学—无机化学]
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参考文献23

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共引文献4

同被引文献30

引证文献4

二级引证文献9

江西科学
2012年 第5期

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