【摘要】 以TiCl4为原料经Ti(OH)4·TEA前驱体水热合成了锐钛型纳米TiO2,利用红外光谱、XRD、TEM等手段对前驱体、TiO2等进行了表征,研究结果表明:水热法合成的锐钛型纳米晶粒径分布均匀,分散性好;100℃下晶化4.5h后,锐钛型纳米TiO2基本形成,平均粒径为8.7nm,水热晶化7.0h后,平均粒径由8.7nm增长到18.7nm。更多还原

【Abstract】 Nanocrystal anatase TiO2 was prepared from Ti(OH)4·TEA sol which was prepared from TiCl4 reacted with NaOH, then be dispersed by triethanolamine (TEA) and aged for 4.5h at 100℃. Thus 10.4g TiCl4 was dropped into ethanol which containing 10.0g NaOH and 7.5g TEA during stirring at room temperature. After centrifugation, the solution containing Ti(OH)4·TEA was dropped into deioned water at 60℃ and the white precipitation was aged for 4.5h to 7.0h at 100℃. The XRD, FTIR, TEM was used to investigate the formatting size, morphology and crystalline of the particles. Results showed that the average partied size was in the range of 8.7nm to 18.7nm.更多还原