【摘要】 分别以尿素、钛酸四丁酯为氮源、钛源,利用溶剂热法制备氮掺杂二氧化钛光催化剂（N-TiO₂）,用XRD、SEM、IR、UV-vis DRS等对改性前后的催化剂进行表征。以LED灯为光源,氧氟沙星（OFX）为模型污染物,考察了N-TiO₂协同单过硫酸氢钾（PMS）光催化降解OFX的性能。研究表明,当氮、钛摩尔比为0.6,OFX初始浓度为10mg/L,N-TiO₂和PMS投加量分别为1.8g/L和3.5mmol/L时,室温反应100 min,OFX的降解率达到94.6%。更多还原

【Abstract】 Nitrogen-doped titanium dioxide photocatalysts（N-TiO₂） were prepared by solvothermal method using urea and tetra-butyl titanate as nitrogen and titanium sources, respectively. The catalysts were characterized by XRD, SEM, IR and UV-Vis DRS. The photocatalytic degradation of ofloxacin by N-TiO₂ in synergy with potassium mono-persulfate（PMS） was investigated by using LED light source and ofloxacin as model pollutant. When the nitrogen/titanium molar ratio was 0.6, the study showed that the removal rate of ofloxacin reached 94.6% within 100 min under the condition that the initial concentration of ofloxacin was 10 mg/L, the dosage of N-TiO₂ and PMS were 1.8 g/L and 3.5 mmol/L, and the room temperature was 25℃.更多还原