In the past few decades, countless organic and inorganic pollutants caused serious environmental problems all over the world. One way to remove or degrade pollutants in the environment is to use oxidizing agents. Photocatalytic technology uses unlimited solar energy to efficiently oxidize and remove organic pollutants. Recently, perylene diimide (PDI)-based nanomaterials have been widely used in photocatalytic degradation. However, there are no reviews on the use of PDI-based composites to remove organic pollutants from contaminated water. Therefore, a review paper is needed to fully understand the current status and prospects of this field. The main purpose of this work is to highlight the recent progress of PDI-based photocatalysts in the removal of organic pollutants. In this review, the basic molecular design and properties of PDI molecules are first described. Then, strategies to improve the photocatalytic activity of PDI are summarized. The system factor and water chemistry affecting the photocatalytic activity for organic pollutant removal are also discussed. Lastly, the stability and future challenges of PDI-based composites are briefly discussed.

中文翻译：

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增强per二酰亚胺光催化降解活性的策略：方法，影响因素和机理

在过去的几十年中，无数的有机和无机污染物在世界范围内造成了严重的环境问题。去除或降解环境中污染物的一种方法是使用氧化剂。光催化技术利用无限的太阳能来有效地氧化和去除有机污染物。近来，基于di二酰亚胺（PDI）的纳米材料已被广泛用于光催化降解。但是，关于使用PDI基复合材料从受污染的水中去除有机污染物尚无任何评论。因此，需要一份综述文件来充分了解该领域的现状和前景。这项工作的主要目的是着重介绍基于PDI的光催化剂在去除有机污染物方面的最新进展。在这篇评论中，首先介绍了PDI分子的基本分子设计和性能。然后，总结了提高PDI光催化活性的策略。还讨论了影响光催化去除有机污染物活性的系统因素和水化学。最后，简要讨论了基于PDI的复合材料的稳定性和未来的挑战。