水中内分泌干扰物（EDCs）浓度低（ng/L-μg/L）、毒性大、难降解，对生态环境和人类健康造成严重威胁。浓度过低导致EDCs光催化降解驱动力不足，亟需研制高能效光催化剂。本项目拟通过纳米纤维素诱导和微波辅助原位水解可控构筑TiO2/石墨烯气凝胶光催化剂，通过石墨烯对EDCs的高效吸附富集作用提高TiO2对痕量EDCs降解的驱动力，构建气凝胶薄孔壁三维结构和Ti-O-C化学界面强化吸附传质和电荷传输过程，实现EDCs高效降解。探讨纳米纤维素对薄壁气凝胶的制备、TiO2结晶和掺杂的结构导向作用，阐释痕量EDCs动态光催化降解的控制机制，评价光催化剂的稳定性和再生性能。研究石墨烯的共轭大π键、三维气凝胶结构和Ti-O-C界面对光生载流子的产生、传输和分离的影响，揭示多重协同作用的本质和高活性可见光催化机制，阐明微观结构与光催化性能之间的构效关系及调控规律，为纳米光催化剂的工程化应用奠定基础。

Endocrine disrupting chemicals (EDCs) are highly toxic and non-degradable with ultra-low concentration (ng/L-μg/L), which could cause a potential threat to ecology and human health. Ultra-low concentration leads to insufficient driving force for photocatalytic degradation, so it is urgent to develop high performance photocatalysts. In this work, TiO2/graphene aerogel will be fabricated combining nanoccellulose direction and microwave-assisted in situ hydrolysis method. The efficient adsorption of conjugated-π structured graphene on EDCs can increase the driving force for photocatalytic degradation of low-concentration of EDCs. Three-dimensional thin-walled structure of aerogel and the Ti-O-C chemical interface can accelerate and enhance this process of mass transfer and charge transfer, thus, to achieve efficient photocatalytic degradation of trace pollutants. The structure-direction of nanocellulose on the controlled preparation of graphene aerogels, TiO2 crystallization and doping will be discussed. The dynamic continuous photocatalytic degradation of trace EDCs will be investigated. The stability and regeneration of photocatalyst will be evaluated. The effect of conjugated-π of graphene, 3D porous structure of aerogel and Ti-O-C interfaces on the generation, transport and separation of photogenerated carriers will be revealed. The multiple synergetic effects and the mechanism of active photocatalysis will be illustrated. The structure-activity relationship between hierarchical microstructure and photocatalytic properties will be clarified. This work will lay a scientific foundation for the potential engineering application of nano-photocatalysts.