抗生素在城市水厂尾水中被频繁检出，对人类环境带来极大的危害。纯粉末态催化剂存在分散性差、悬浮体系下不易回收、难重复使用等缺陷。本项目拟利用水热法合成LDHs，阐明其组成结构与形貌调控规律，并基于真空过滤法制备LDHs/天然植物纤维复合膜，优化其制备工艺参数条件。通过原子力显微镜、X-射线光电子能谱、表面光电压谱、紫外可见漫反射光谱与光电化学测试等揭示复合膜微观结构-表面态-载流子界面传递与动力学行为-光吸收-催化性能之间的内在关系，解析太阳光强化LDHs/天然植物纤维复合膜活化PDS体系降解污染物的活性提高机理。通过研究水中高毒性与难生物降解抗生素在复合膜表面的吸附与降解行为，探究不同运行工况和环境条件对抗生素降解效能的影响，结合其降解过程中间产物演变规律与各活性物种的贡献，提出不同结构抗生素的降解过程机制与一般规律及动力学过程，为高效消除水中抗生素污染的纳米材料开发提供切实可行的策略。

Antibiotics were frequently detected in tailing water of municipal water plants, which brought great harm to human beings and the environment. However, pulverous catalysts possessed some deficiencies including poor dispersion and difficulty of recycle and reuse in slurry system. In this project, layered double hydroxides (LDHs) were synthesized through hydrothermal method. Afterwards, the controlling characteristics between composition structure and morphology were clarified. Subsequently, LDHs/natural plant fiber composite film was prepared by vacuum filtration strategy. Also, the preparation parameters and conditions were optimized. Meanwhile, the intrinsic relationships among microstructure, surface states, interface transfer and dynamic behaviors of charge carriers, light absorption and visible light photocatalytic performance were revealed by atomic force microscope, X-ray photoelectron spectroscopy, surface photvoltage spectra, ultraviolet visible diffuse reflectance spectrum and photoelectrochemical measurements. Furthermore, the enhanced mechanism of solar light/LDHs/natural plant fiber composite film/PDS system was revealed in detail. Based on the adsorption and decomposition behaviors of high-toxicity and non-biodegradable antibiotics in water on the surface of LDHs/natural plant fiber composite film, functions of different operation and environmental conditions towards to the decomposition of antibiotics were explored systematically. Combined with the evolution of intermediates in the degradation process of antibiotics and contributions of various active species, the degradation mechanism, general rules and kinetic process of antibiotics with different structures were proposed, which would provide a feasible strategy for design and exploitation of functional nano-materials for high-efficient elimination of antibiotics.