中文摘要：

TiO2纳米材料广泛地用于光电响应、催化和太阳能等领域，是目前研究最广泛的半导体纳米材料之一．常用制备TiO2纳米微粒的方法有溶胶凝胶法、反胶束法和沉淀法等．与这些制备方法相比，在离子液体中制备的TiO2纳米微粒所需条件简单，得到的纳米微粒的性能有所提高．Zhou等和Kye等H别在1-正丁基-3-甲基咪唑四氟硼酸盐离子液体和1-正丁基-3-甲基咪唑六氟合磷离子液体介质中制备出锐钛矿相TiO2纳米微粒，反应温度不超过100℃，比通常方法所需温度低，

英文摘要：

1-Methyl-3-carboxymethyl imidazolium chlorine （ [ C2 OOHmim ] Cl ） ionic liquid surface-capped TiO2 nanoparticles were prepared by using tetra-n-butyl titanate ethanol solution as a precursor. The structure of nanoparticles was characterized by FTIR, TEM, XRD and XPS. The results confirmed that [C2 OOHmim] · Cl ionic liquid combined with TiO2 nanoparticles by chelation, the average diameter of TiO2 nanoparticles was about 8 nm and anatase state was obtained. And only anatase existed even after calcinated at 750 ℃. As to the formation mechanism, we think that the inorganic-organic copolymerized surface-capped layer and repulsive force of positive charge played an important role in the formation and stabilization of TiO2 nanoparticles.