摘要
以钛酸丁酯为前驱体,尿素为N源,电气石为载体,采用超声辅助溶胶-凝胶法制备N掺杂纳米TiO_2/电气石复合材料。采用XRD,FT-IR,UV-Vis DRS,SEM,EDS等测试技术对复合材料的结构和性能进行表征。分别考察煅烧温度、掺N量、电气石添加量、催化体系等因素对复合材料光催化性能的影响。结果表明:在煅烧温度为500℃,N掺杂量为5%(摩尔分数),电气石添加量为10%(质量分数),催化剂用量为3g/L,500W紫外灯照射条件下,N掺杂纳米TiO_2/电气石复合材料光催化降解TNT(10mg/L)的效果最佳,且具有良好的再生利用性能。
Using Ti(OC_4H_9)_4 as precursor,CO(NH_2)_2 as nitrogen source,tourmaline as support,the nitrogen-doped nano TiO_2/tourmaline composites were synthesized by sol-gel method with ultrasound assisted.The structure and performance of composites were characterized by XRD,FT-IR,UV-Vis DRS,SEM,EDS.The effects of calcining temperature,nitrogen-doped content,tourmaline amount,catalyst system on the photocatalytic activity of nitrogen-doped nano TiO_2/tourmaline composites were studied.The results show that the photocatalytic activity of nitrogen-doped nano TiO_2/tourmaline composites calcined under 500℃,the nitrogen doped amount of 5%(mole fraction),tourmaline added in an amount of 10%(mass fraction),catalyst dosage of 3g/L,under 500 W UV light irradiation conditions,the photocatalytic degradation effect of TNT(10mg/L)is the best,and has a good recycling performance.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2016年第6期104-109,共6页
Journal of Materials Engineering
基金
重庆市自然科学基金项目(CSTC 2008BB7139)
