Abstract

In this study, we have synthesized the composites of polythiophene and titanium dioxide nanoparticles with different TiO₂ percentage (3, 5, 7, and 10%) by chemical oxidative polymerization method. The composite materials were characterized by various techniques including Fourier transform infrared spectro-scopy, X-ray diffraction, ultraviolet-visible spectroscopy and electrical conductivity. The results of the photocatalytic evaluation carried out on the synthesized composites show a continuous decrease in the relative concentration of methyl orange with the increase in the concentration of TiO₂ in the composite. Whereas, the results of the photocatalytic evaluation carried out on direct mixtures of polythiophene and TiO₂ show a considerable increase in the decolorization of methyl orange. The results of the adsorption study of methyl orange on the catalyst materials show an improvement in the maximum capacity adsorption of methyl orange on polythiophene and 40% TiO₂ mixture relative to that of pure TiO₂ (in 2.3 times) and to that of pure polythiophene (in 1.3 times).

中文翻译：

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基于聚噻吩和二氧化钛纳米粒子的光催化复合材料的理化性质

摘要

在本研究中，我们通过化学氧化聚合法合成了具有不同 TiO ₂百分比（3、5、7和 10%）的聚噻吩和二氧化钛纳米粒子的复合材料。通过傅里叶变换红外光谱、X射线衍射、紫外-可见光谱和电导率等多种技术对复合材料进行了表征。对合成的复合材料进行光催化评价的结果表明，随着复合材料中TiO ₂浓度的增加，甲基橙的相对浓度不断降低。然而，对聚噻吩和 TiO _{2 的}直接混合物进行的光催化评价结果甲基橙的脱色显着增加。甲基橙在催化剂材料上的吸附研究结果表明，甲基橙在聚噻吩和 40% TiO ₂混合物上的最大吸附容量相对于纯 TiO ₂的最大吸附量（2.3 倍）和纯聚噻吩的吸附量有所提高（1.3 倍）。