光催化
双酚A
降级(电信)
材料科学
单体
X射线光电子能谱
聚噻吩
催化作用
激进的
化学工程
光化学
复合数
核化学
化学
聚合物
有机化学
复合材料
导电聚合物
环氧树脂
工程类
电信
计算机科学
作者
Haijun Wu,Puyang Zhou,Jagadeesh Kumar Alagarasan,Junjie Jing,Ting Zhou,Yuanguo Xu
标识
DOI:10.1016/j.apt.2021.05.022
摘要
The high recombination rates of photogenerated electron-holes significant inhibit the catalytic activity of semiconductor photocatalysts. In this study, novel polythiophene (PTh)/BiOBr hybrids were successfully synthesized using an effortless method to achieve the degradation of Bisphenol A (BPA). According to the results, the introduction of polythiophene (PTh) significantly improved the separation efficiency of photocharge carriers, thus enhancing the photocatalytic activity of PTh-BiOBr. The X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectrometer were applied to characterize the samples structure and light absorption properties. The degradation properties of BPA of materials under visible light prove that the photocatalytic capabilities of the complex can be improved significantly compared to BiOBr monomers, thus confirming the above-mentioned hypothesis. Under the same experimental conditions, 0.5% PTh-BiOBr was obtained for the optimal compound, and the degradation efficiency of BPA after 100 min of visible light was 83%, which is 34% higher than that of the BiOBr monomer. In the process of photocatalytic degradation of BPA by the catalyst, the active free radicals of the catalyst were obtained by ESR and free radical capture experiment, while a possible photocatalytic degradation mechanism was proposed on this basis. From O2, the •O2– plays a major role in the process of photo-react degradation of BPA, while h+ and •OH play a part. This work provides a more eco-friendly and efficient way for BiOBr retouching.
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