中文摘要：

以钛酸四丁酯为前驱体，采用溶胶-凝胶法制得Fe、N离子共掺杂的以活性炭（AC）为载体的光催化剂（TiO2／AC），在紫外光照射下进行了气相丙酮的光催化降解研究。探讨了丙酮初始质量浓度、紫外光光强、催化剂用量、反应器内湿度等因素对其降解率的影响。结果表明，活性炭与TiO2的协同作用大大提高了对丙酮的降解效果；紫外光光强的增加对丙酮降解率有一定提高；使用3g光催化剂，丙酮的初始质量浓度为39．40mg／L；反应器内相对湿度为63％时，丙酮的降解效果最好，降解反应155min后丙酮的降解率达92．63％；催化剂循环使用6次后丙酮的降解率为83．91％。

英文摘要：

Photocatalysts（TiO2/AC）codoped with Fe and N ions were prepared via the sol-gel method with butyl titanate Ti（OBu）4 as precursor and activated carbon（AC）as the supported. The photocatalytic degradation of gaseous acetone by TiO2/AC under UV light was investigated. The main controlling factors, such as the initial mass concentration of acetone, the intensity of UV light, the amount of catalyst and the relative humidity in photoreactor, which affected the degradation rate of acetone were discussed. The results show that the degradation rate of acetone is promoted greatly because of the synergy of TiO2 and activated carbon（AC）. The degradation rate of acetone has been improved due to the increasing of the UV intensity in the range of 300W to 500W. The degradation rate of acetone can reach 92.63% in 155min when the initial concentration of acetone was 39.40mg/L and the humidity is 63%, respectively, using 3g photocatalyst. The degradation rate of acetone decreases to 83. 91% after six times recycle of the photocatalyst.