微波制备沸石负载 N/TiO2 光降解催化剂及对罗丹明B的降解
Microwave Preparation Zeolite Loading N/TiO2
Photocatalysts and Its Photodegradation on Rhodaminc B
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摘要: 以沸石为载体，以钛酸丁酯和尿素为助剂,采用溶胶-凝胶法制备沸石负载N/TiO2光降解催化剂.在可见光下对罗丹明B进行降解实验,讨论影响罗丹明B降解性能的主要因素.结果表明，当微波反应15 min，焙烧温度为450 ℃、催化剂用量为40 mg/L、光照时间为30min时，样品对罗丹明B的降解率可达99.2 %以上. 光降解催化剂再生后重复使用4次，降解率仍可达89.7%Abstract: The nitrogen-doped TiO2 photocatalysts were prepared by sol-gel method, using trtrabutyl titanate and carbamide as raw materials and zeolite as the supporter.The major factors were tested and discussed to photocatalyst degradation of rhodamine B in the sunlight. The results showed that after the microwave reaction was conducted for 15 min, the rhodamine B degradation rate of 30 min may reach above 99.2% in visible light when the dosage of 40 mg/L and the roasting temperature was 450 ℃．The degradation rate could reach 89.7% after the photocatalyst was regenerated for 4 times
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