| 聚乙二醇包覆的TiO2粉体的光催化活性 |
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| 引用本文： | 钟金莲,罗序中,余建平.聚乙二醇包覆的TiO2粉体的光催化活性[J].精细石油化工进展,2009,10(2):25-28. |
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| 作者姓名： | 钟金莲 罗序中 余建平 |
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| 作者单位： | 赣南师范学院化学与生命科学学院,赣州,341000 |
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| 基金项目： | 赣南师范学院自然科学研究基金资助项目，江西省自然科学基金资助项目 |
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| 摘 要： | 采用TiCl4水解法制备了被聚乙二醇（PEG）包覆的TiO2粉体，并通过X射线衍射（XRD）、透射电镜（TEM）对粉体的物相组成及表面形貌进行表征。将合成的TiO2粉体用于2，4-二氯苯氧乙酸（2，4-DPA）的降解反应中，利用荧光光度计以及紫外可见分光光度计等技术手段，考察溶液的荧光及紫外吸收强度随光照时间的变化关系，并以此判断包覆的TiO2的光催化性能。结果表明：PEG包覆的TiO2能降低2，4-DPA溶液的荧光强度和紫外吸收强度，有明显的光催化降解作用，且以相对分子质量较大的PEG包覆的效果较好。
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| 关 键 词： | TiO2粉体 聚乙二醇 包覆 光催化降解 |
Photocatalytic Activity of TiO2 Powder Coated by Polyethylene Glycol |
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| Zhong Jinlian,Luo Xuzhong,Yu Jianping.Photocatalytic Activity of TiO2 Powder Coated by Polyethylene Glycol[J].Advances in Fine Petrochemicals,2009,10(2):25-28. |
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| Authors: | Zhong Jinlian Luo Xuzhong Yu Jianping |
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| Affiliation: | Zhong Jinlian Luo Xuzhong Yu Jianping (College of Chemistry and Life Science,Gannan Normal University,Ganzhou 341000) |
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| Abstract: | TiO_2 powder coated by polyethylene glycol(PEC),a photocatalyst,was prepared by hydrolyzing method of TiCl_4 and its composition and appearance were characterized by XRD and TEM.The PEG-coated TiO_2 powder as photodegradation catalyst was used in degradation of 2,4-dichlorophenoxyacetic acid(2,4-DPA). The changes of fluorescence and UV absorption intensities of the 2,4-DPA solution with UV exposure time were investigated using fluorescenc spectrometer and UV-vis spectrophotometer to determine the photocatal... |
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| Keywords: | TiO_2 powder polyethylene glycol coating photocatalytic degradation |
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