药物及个人护理品（PPCPs）的健康风险与污染消除一直是环境领域的研究热点。水中痕量（ng/L-μg/L）PPCPs难以采用常规工艺达到理想的处理效果，是水污染控制的研究难点之一。本项目基于共价三嗪骨架（CTFs）的结构/组成可调且光响应强的特点，拟设计集吸附与光助再生功能于一体的吸附剂，以克服现有吸附剂吸附能力有限和再生困难等问题；并采用纳米缺陷工程技术同时增强吸附与再生能力，以实现水中PPCPs的高效去除。通过对CTFs上缺陷位置、结构和含量的调控，分别在苯环构造杂质/缺失缺陷和对三嗪环引入杂质/空位缺陷，以获得单一或复合缺陷的CTFs。结合吸附研究、太阳光助再生实验和密度泛函理论计算，深入探究缺陷对CTFs性能的调控作用及构-效关系，重点阐明缺陷化CTFs对PPCPs的吸附机理和自身光助再生机制，揭示吸附-光助再生的协同机制，为构建高性能的可光助再生吸附剂控制水中微污染提供理论依据。

The health risks and pollution elimination of pharmaceuticals and personal care products (PPCPs) have always been the focuses of researches in environmental field. Trace concentrations (ng/L-μg/L) of PPCPs in water are difficult to be treated effectively by conventional treatments, which is one of the research issues of water pollution control. In order to overcome the shortcomings of existing adsorbents in poor performances of adsorption and regeneration, in this project, we will fabricate a series of covalent triazine frameworks (CTFs) as adsorbents with capability of a high adsorption capacity and photoregeneration. CTFs have a tunable structure/composition and strong light response, which can be tailored by nanodefect engineering for enhanced removal of PPCPs from water. We will focus on the introduction of defects in benzene rings and triazine rings by regulating location, structure and content of defects to obtain CTFs materials with single or multiple defects. The adsorption, sunlight-driven regeneration and density functional theory calculation will be performed to clarify the effects of the defects on adsorption and photoregeneration of CTFs as well as the intrinsic structure-property relationship. And the mechanisms of adsorption towards PPCPs and photoregeneration of defective CTFs will be investigated. Moreover, the synergistic effects of adsorption-photoregeneration of CTFs will be revealed. The outcomes of the project will provide strong scientific basis for an innovative strategy toward design and fabrication of high-performance photoregenerable adsorbents to control micropollution in water.