负载织物对纳米TiO2光催化剂净化氨气性能的影响

制备了纳米光催化剂悬浮液，借助后整理工艺对3种织物进行负载加工，并利用X射线衍射仪(XRD)和扫描电镜(SEM)等对其进行了表征. 通过自行设计的小型环境舱和光催化反应器重点考察了棉机织物、涤纶机织物和涤/棉混纺机织物对纳米光催化剂净化氨气性能的影响，并比较了在不同负载织物表面上纳米光催化剂的活性. 结果表明，负载纳米光催化剂的棉织物的氨气净化性能高于负载纳米光催化剂的涤纶织物和涤/棉混纺织物的氨气净化性能. 在负载Ag-TiO2光催化剂的条件下，负载涤纶织物和涤/棉混纺织物对氨气的净化性能有所加强.

Influence of Different Types of Fabrics Loaded with TiO2 Nano-photocatalysts on Ammonia Removal

Aqueous suspensions of TiO2 nano-photocatalysts were prepared and the photocatalysts were loaded on cotton fabric, polyester fabric and polyester/cotton blended fabric by using a padding-drying-curing process. The loaded fabrics were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The gaseous ammonia was derived from an environmental condition simulated chamber. The specifically designed photocatalytic reactor was used to assess the effect of different types of fabrics on ammonia removal efficiency of the nano-photocatalysts, and their photocatalytic activity on different types of fabrics was compared. The results indicated that the cotton loaded with nano-photocatalysts was higher than the polyester fabric or polyester/cotton blending fabric loaded with the nano-photocatalysts in terms of the ammonia removal efficiency. The ammonia removal efficiency of polyester fabric or polyester/cotton blending fabric could be improved through loading with Ag-mixed TiO2 nano-photocatalyst.