The Physical and Biological Properties of NanoTiO2 Material

The physical and biological properties of TiO2 materials including NanoTiO2, micrometerTiO2 and NanoTiO2 tubes have been studied using scanning electron and infrared spectrometer, X-ray diffraction instrument as well as 3-(4,5dimethylthiazol 2-yl)-2,5 diphenyltetrazo-lium bromide (MTT) colorimetric method, respectively. These materials are prepared by chemical deposition and anode oxidation methods, respectively. The sizes of NanoTiO2 are 80 nm and 1000 nm, respectively, their infrared properties of absorption are different, the characteristic peaks of the former are 1271, 1615, 2957 and 3422 cm, the latter are 1645 and 2356 cm. The NanoTiO2 tubes can be formed by anode oxidation method, its diameters are between 50 100 nm, different NanoTiO2 tubes contain different components of oxygen and titanium. In MTT experiment we discover the changes of properties of proliferation of the liver and chick embryo fibroblast cells under influences of NanoTiO2 relative to those of the controlled groups, when small NanoTiO2 suspension is added in these cultivated liquids of cell, but the influence of NanoTiO2 on the proliferation of the person’s liver cell is still very small, therefore, the toxicities of NanoTiO2 containing 80 nm and 1000 nm to these cells are still first score.