雌激素是一类具有破坏生物机体稳定和调控作用的内分泌干扰物，因此寻求高效的雌激素去除方法是水处理领域的研究焦点。基于太阳能利用的光催化技术是实现水环境中雌激素降解的有效途径，其关键在于设计能被长波光激发的、高量子效率的半导体光催化体系。本项目拟优化与控制合成基于Z体系的金属硫化物/WO3/g−C3N4复合光催化剂，研究三种半导体的界面结构、组成、性质与调控机制，明确半导体长波光催化活性中心，揭示影响不同半导体间光生载流子传递的本质规律。探究光催化剂对雌激素的固液分配、宽光谱光催化降解的影响因素及光催化剂的稳定性。模拟与计算雌激素分子和过渡产物的前沿分子轨道能量及成键电子云密度、结合中间产物的追踪、光生载流子的转移及反应活性自由基的捕获，洞悉雌激素在光催化剂表面降解的反应机制。本项目有望丰富光催化体系设计理论和光催化反应特征，为雌激素污染废水与水环境修复提供理论依据与实践方法。

Estrogen is a kind of endocrine disruptors that have the function of destroying the stability and regulation of living organisms. Therefore, the research and development of efficient technology for estrogen removal is the focus in the field of water treatment. The photocatalysis is an effective way based on solar energy utilization for estrogen degradation. In this technology, the design of photocatalysts that can be excited by long−wave light with high−quantum−efficiency is one of the key factors. Here, the present project is planned to optimize and control the synthesis of Z−based photocatalytic system of sulfides/WO3/g−C3N4 composite and characterize the interface structure, composition, properties and regulatory mechanisms of the three semiconductors. The active center of the semiconductor photoexcitation by long−wavelength light and the essential laws that affect the photogenerated carrier transport between different semiconductors are clasfied. Further, we aim to explore comprehensively the photocatalyst properties for the removal of estrogen, involving in adsorption behavior, photocatalytic activity and stability. Meanwhile, combining with the transfer and capture of photogenerated carriers and the free radicals, the orbital energy data and electrons density of estrogen molecule and intermediate products, the degradation intermediates and transient processes will also be investigated for discerning the estrogen degradation mechanism on the surface of photocatalyst. In a word, This project is expected to enrich the design theory of photocatalytic system and the photocatalytic reaction characteristics of semiconductor materials, which provides the theoretical basis and practical method for for estrogen−contaminated wastewater treatment and water environment remediation.