【摘要】 以TiCl4为主要原料,通过压力热晶法在300~400℃酸性条件下直接制备金红石型的TiO2纳米单晶,并通过TEM,XRD,HRTEM,FFT等技术手段对TiO2纳米晶的结构和形貌进行了表征。结果表明:高温和高压下有利于TiO2结晶成型。TEM显示:制备得到的TiO2纳米晶具有四方型结构外观,尺寸为十几到几百纳米,高温灼烧后纳米晶型不发生变化。XRD显示:制备得到的TiO2纳米晶是金红石型结构。更多还原

【Abstract】 Nanocrystalline rutile TiO₂ particles were direct synthesized by 300～400℃ pressure-thermalcrystallization method using TiCl₄ as the soure material in the condition of acid.The characteristics of the powders were studied by XRD,TEM,HRTEM,FFT.The results showed that the high temperature and pressure are good for nanocrystalline TiO₂ forming.The size of the particles ranges from 10 to 300nm,and square apparent structure.The formation,morphology and particle size of rutile TiO₂ isn’t change after treated at the high temperature.更多还原