Abstract
The physical and biological properties of TiO2 materials including nano TiO2, micrometer-TiO2 and nano TiO2 tubes have been studied using scanning electron and infrared spectrometer, X-ray diffraction instrument as well as 3-(4,5- dimethylthiazol 2-yl)-2,5 diphenyltetrazolium bromide (MTT) colorimetric method, respectively. These materials are prepared by chemical deposition and anode oxidation methods, respectively. The sizes of nano TiO2 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-1, the latter are 1645 and 2356 cm-1. The nano TiO2 tubes can be formed by anode oxidation method, its diameters are between 50-100 nm, different nano TiO2 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 nano TiO2 on the proliferation of the person’s liver cell is still very small, therefore, the toxicities of nano TiO2 containing 80nm and 1000 nm to these cells are still first score.
Highlights
At present, the Nanomaterials and Nanotechnology and Nanoinstrument have been greatly developed and applied extensively in the industry, agriculture, science and medicine as well as our living
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, the toxicities of NanoTiO2 containing 80 nm and 1000 nm to these cells are still first score
Summary
The Nanomaterials and Nanotechnology and Nanoinstrument have been greatly developed and applied extensively in the industry, agriculture, science and medicine as well as our living. A lot of Nanomaterials have been made in bulk in factory and were sold in markets. In such a case it is very necessary to know whether these Nanomaterials are safe, or speaking, have toxicity to the person’s and animal’s health [1,2,3,4]. This problem attracts scientist’s and government’ attentions in the world. Studying the safety or toxicity of the Nanomaterials has important significances in sciences and applications. In this paper we will study the physical and biological properties of NanoTiO2
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