Adsorption and degradation of harmful organic molecules in aqueous wastewater streams is a considerable challenge, and materials featuring both properties are highly sought after. Tris(4-aminophenyl)amine-based polyimide (TP) is well-known for its significant adsorption properties, yet it features limited photocatalytic performance. To overcome this limitation, graphitic carbon nitride (CN) is combined with TP to form TPCN composites in order to improve the adsorption and photocatalytic properties for the degradation of organic molecules. Characterization of TPCN composites via UV–vis diffuse reflectance spectra (DRS) and photoluminescence (PL) showed improved charge separation, slow recombination of electron–hole pairs, and enhanced light absorption. Subsequent analysis of rhodamine B adsorption and photodegradation showed high activity of the composite material (99% degradation under visible light in 40 min), indicating the favorable interaction of both components. Therefore, TPCN composites might be an avenue for the application of organic industrial pollutant removal.

中文翻译：

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三(4-氨基苯基)胺基聚酰亚胺/石墨氮化碳复合材料去除有机染料的吸附和光催化性能

废水流中有害有机分子的吸附和降解是一个相当大的挑战，具有这两种特性的材料受到高度追捧。三(4-氨基苯基)胺基聚酰亚胺(TP)以其显着的吸附性能而闻名，但其光催化性能有限。为了克服这一限制，石墨氮化碳（CN）与TP结合形成TPCN复合材料，以提高有机分子降解的吸附和光催化性能。通过紫外可见漫反射光谱 (DRS) 和光致发光 (PL) 对 TPCN 复合材料进行表征，结果表明电荷分离得到改善，电子空穴对复合缓慢，光吸收增强。随后对罗丹明 B 吸附和光降解的分析表明，复合材料具有高活性（可见光下 40 分钟内降解 99%），表明两种组分之间存在良好的相互作用。因此，TPCN复合材料可能成为去除有机工业污染物的应用途径。