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以TiCl4浓H2SO4为原料，经水热沉淀反应，通过控制反应条件，得到不同粒度和锐钛矿相结构的TiO2-DSC实验发现不同粒径（10，18，29nm）的纳米锐钛矿TiO2都存在一个放热峰，而粒径为10nm的样品除了存在放热峰外还观察到了一个吸热峰介电实验表明：纳米锐钛矿TiO2有介电反常和尺寸效应，还观察到了介电常数和介电损耗角存在温度峰．
TiO2-DSC experiments with different particle sizes and anatase phase structures were carried out by hydrothermal precipitation reaction with TiCl4-rich H2SO4 as the raw material. It was found that all anatase TiO2 with different particle sizes (10, 18, 29 nm) There is an exothermic peak, and the sample with particle size of 10nm in addition to exothermic peak also observed an endothermic peak Dielectric experiments show that: nano-anatase TiO2 dielectric anomalies and size effects, but also observed the dielectric constant There is a temperature peak at the dielectric loss angle.