【摘要】 在1-丁基-3-甲基咪唑六氟磷酸盐([Bmim]PF6)离子液体中,用溶胶-凝胶法以及微波干燥的方法制备了N掺杂的纳米TiO2光催化剂,以甲基橙为模拟污染物,高压汞灯为光源,考察了离子液体加入量、N掺杂量和微波干燥等因素对TiO2光催化活性的影响。结果表明,N掺杂TiO2催化剂的活性高于未掺杂TiO2催化剂,在离子液体加入量为5.6 mL,掺杂量n(氯化铵)∶n(钛酸丁酯)=4∶1,在家用微波炉210 W功率干燥20 min,马弗炉625℃焙烧处理1.5 h,所制得的氮掺杂纳米TiO2光催化剂,具有较高的光催化活性。更多还原

【Abstract】 N-doped nano-particle TiO2 photocatalysts were obtained by sol-gel method and microwave drying in ionic liquid PF6.Effects of ionic liquid dosage,N/Ti mole ratio and microwave drying on photocatalytic activity of the nanoparticle TiO2 were investigated using methyl orange degradation as the probe reaction and ultraviolet lamp as the irradiation source.The N-doped nanoparticle TiO2 exhibited higher photocatalytic activity than pure TiO2.Satisfactory photocatalytic behaviors were obtained over N-doped nanoparticle TiO2 prepared under the following condition: ionic liquid volume of 5.6 mL,n(ammonium chloride):n(butyl titanate) of 4:1,microwave drying with power of 210 W for 20 min,calcination at 625 ℃ for 1.5 h.更多还原