ACF氮等离子体改性对负载型TiO2催化剂光催化性能的影响

为了解载体表面改性对负载型光催化剂表面活性的影响，采用氮等离子体对活性炭纤维表面进行改性，并以钛酸四丁酯为前驱体，水解法负载TiO2，制备了复合光催化剂。通过扫描电子显微镜观察了复合光催化剂的表面形貌；用氮气吸附法比较了活性炭纤维表面改性前后负载TiO2样品的比表面积和孔隙分布的情况；利用XPS测试分析了利用改性前后活性炭纤维负载TiO2的复合光催化剂表面的化学结构。结果表明，载体表面改性前后获得的复合光催化剂样品具有相似的形貌和孔隙结构；而载体经表面改性后获得的复合光催化剂表面吸附氧物种量提高了近3％，用其光催化净化浓度为20mg／m^3的甲醛气体400min，甲醛的降解率达98％以上。

Effects of Photocatalytic Performance of Supported TiO2 Catalysts for Active Carbon Fiber Modified by Nitrogen Plasma

To study the effect of surface modification on the loading photocatalysts activity,a compound photocatalyst is attained initially via surface modification of the active carbon fiber(ACF) through nitrogen plasma,and subsequently by TiO2 loading under tetrabutyl titanate hydrolyzation.The compound photocatalyst is then characterized with a scanning electron microscope(SEM) for its morphology,and by N2 adsorption for its specific surface area and pore size distribution.Focus is given on the XPS characterizatio...