论文部分内容阅读
在1-丁基-3-甲基咪唑四氟硼酸盐[Bmim]BF4离子液体中合成了TiO2,经负载蒙脱石后,制备成TiO2/蒙脱石纳米复合材料.利用X射线衍射(XRD),差热分析法(TG-DSC)和红外光谱(FTIR)等分析手段对复合材料进行结构表征。结果表明,离子液体合成的TiO2粒径小,负载后的TiO2/蒙脱石复合材料耐热性较好,更加稳定;钛土比为1.5mmol/g,煅烧温度为400℃时,复合材料性能最佳,光照时间达到150min,催化剂对甲基橙的降解率为100%;将复合催化材料用于蓝藻水溶液的处理,效果较纯TiO2显著,显示出良好的应用前景.
TiO2 was synthesized from 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim] BF4 ionic liquid and then prepared into TiO2 / montmorillonite nanocomposites after being loaded with montmorillonite. X-ray diffraction XRD, TG-DSC and FTIR were used to characterize the composites. The results show that TiO2 particles synthesized by ionic liquid are small in size and the TiO2 / montmorillonite composites have better heat resistance and stability. When the ratio of Ti to Ti is 1.5 mmol / g and the calcination temperature is 400 ℃, The best photocatalytic activity of methyl orange was 100% when the irradiation time was 150 min. The composite catalyst was used in the treatment of cyanobacteria aqueous solution, which was more effective than pure TiO2 and showed a good application prospect.