中文摘要：

为增强TiO2光催化降解硝基苯的性能,采用溶胶-凝胶方法进行TiO2的铜掺杂改性,并通过性能表征与分析确定最优铜掺杂量。XRD、FESEM与Jade分析得出,所制备的1.0%、1.5%、2.0%和2.5%Cu-TiO2在各项指标优于德国P25-TiO2,晶粒尺寸20-50 nm,其中1.5%摩尔比Cu-TiO2的XRD峰值最高和结晶度最好,且团聚现象较弱,且晶粒尺寸小于P25。结合铜掺杂结构、微应力变化以及对硝基苯的降解性能,采用1.5%摩尔比Cu-TiO2光照180 min对硝基苯降解效率最优,是P25-TiO2降解性能的2倍,且遵循拟一级反应动力学。EDS与降解实验联合得出最优降解硝基苯的铜掺杂TiO2式为Cu（0.0183Ti（0.9817）O2。模拟含硝基苯废水中C和N元素浓度的变化规律,显示Cu（0.0183）Ti（0.9817）O2降解硝基苯存在苯环被矿化生成CO2和NO2-键断裂等反应过程。

英文摘要：

Copper doped TiO2 prepared by the sol-gel method was used to enhance the performance of a photocatalytic degradation reaction. The optimum mol ratio of Cu to TiO2 was also analyzed and measured. As determined by XRD,FESEM,and Jade analysis,Cu doped TiO2 with a mol ratio of 1. 0%,1. 5%,2. 0%,and 1. 0% has better characteristics than German P25 TiO2,with grain sizes of 20—50 nm. In particular,1. 5% Cu doped TiO2 with a fine grain size had the highest and finest degree of crystallinity of TiO2 according to its XRD peak,and the reunion phenomenon was the weakest among all the Cu-TiO2. Combined with the Cu doping structure,micro stress changes,as well as the performance of the degradation of nitrobenzenes（ NBs）,the optimum mol ratio of Cu doped with TiO2 was 1. 5%. With light degradation of NBs using 1. 5% Cu-TiO2 for 180 min,the removal efficiency was twice as high as Germany P25 TiO2. The photocatalytic degradation reaction of NBs by Cu-TiO2 followed first order kinetics. Synthetically,FESEM,ESD,and the degradation of NBs performance confirmed that the optimal formula of CuxTi（（1-x））O2 for the degradation of NBs is Cu（0. 0183）Ti（0. 9817）O2. Based on the varying concentrations of C and N elements in the solution,the intermediate reaction of NB degradation by CuxTi（（1-x））O2 included the processes of benzene ring mineralization into CO2 and NO2-bond rupture.