PET基二氧化钛光催化涂层的制备及性能研究

发布时间：2018-11-10 19:20

【摘要】：采用旋涂法在聚对苯二甲酸乙二醇酯(PET)薄膜基材上制备出二氧化钛光催化涂层。为制备纳米二氧化钛(TiO_2)粒子富集于涂层与空气界面处的光催化涂层,采用偶联剂1H,1H,2H,2H-全氟辛基三乙氧基硅烷对纳米TiO_2粒子进行了表面氟化改性。采用SEM、紫外-可见分光光度计和接触角测定仪对PET基光催化涂层的结构进行了表征。结果表明,所制备的光催化涂层厚度约为4~6μm,且在可见光区具有极高的透明性。以甲基橙为目标污染物考察了光催化涂层的光催化活性,结果表明,含有氟化纳米TiO_2粒子的光催化涂层比含有纯纳米TiO_2粒子的光催化涂层具有更高的光催化活性,纳米TiO_2粒子表面氟化改性使纳米TiO_2粒子富集于涂层与空气界面处,这种粒子的分布状态有利于光催化活性的提高。
[Abstract]:TIO _ 2 photocatalytic coating was prepared on (PET) thin film substrate by spin coating method. In order to prepare a photocatalytic coating with nano-titanium dioxide (TiO_2) particles enriched at the interface between the coating and the air, the surface fluorination modification of TiO_2 nanoparticles was carried out using the coupling agent 1H _ (1H) H _ (2) -perfluorooctane triethoxysilane. The structure of PET based photocatalytic coating was characterized by SEM, UV-Vis spectrophotometer and contact angle analyzer. The results show that the thickness of the photocatalytic coating is about 4 ~ 6 渭 m, and its transparency is very high in the visible region. The photocatalytic activity of the photocatalytic coating was investigated with methyl orange as the target pollutant. The results showed that the photocatalytic activity of the photocatalytic coating containing fluorinated nano TiO_2 particles was higher than that of the pure nano TiO_2 coating. The surface fluorination modification of nanometer TiO_2 particles makes the nanoparticles enrich at the interface between coating and air, and the distribution of these particles is favorable to the improvement of photocatalytic activity.
【作者单位】：江苏理工学院材料工程学院;
【基金】：江苏省高校自然科学研究面上项目(14KJB430013)
【分类号】：TB306

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