The Physical and Biological Properties of NanoTiO₂ Material

Xiao Feng Pang

University of Electronic Science and Technology of China.

DOI: 10.4236/msa.2011.27125                

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.

Keywords

Nan TiO₂, Micrometer TiO₂, Nano TiO₂ Tube, Infrared And X-Diffraction Spectrum, MTT Method, Cell, Biological and Physical Property

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	R. F. Service, “Nanomaterials Show Signs of Toxicity,” Science, Vol. 300, No. 11, November, 2003, pp. 243-247. doi:10.1126/science.300.5617.243a
[2]	D. C. Wu and C. L. Du, “Noano Fibers,” Chemical Industry Press, Beijing, 2003.
[3]	K. Sunada, Y. Kikuchi, K. Hashimolo and A. Fujishima, “Bactericidal and Detoxification Effects of TiO2 Thin Film Photocatalysts,” Environmental Science and Technology, Vol. 32, No. 5, May, 1998, pp. 726-730. doi:10.1021/es970860o
[4]	X. F. Pang, “Biopysics,” Press of University of Electronic Science Technology of China, Chengdu, 2007.
[5]	S. Daye and Y. L. Guo, “Cell Singal Transmition,” Science Press, Bejing, 2001.
[6]	R. N. Jorissen, F. Walker and N. Pouliot, et al., “Epidermal Growth Factor Receptor Mechanisms of Activation and Signaling,” Experimental Cell Research, Vol. 284, No. 1, January, 2003, pp. 31-53. doi:10.1016/S0014-4827(02)00098-8
[7]	W. Han, Y. D. Wang and Y. F. Zheng, “In Vitro Biocompatibility Study of NanoTiO2 Materials,” Advanced Materials Research, Vol. 47-50, October, 2008, pp. 1438- 1441. doi:10.4028/www.scientific.net/AMR.47-50.1438
[8]	Z. Q. Situ and J. Z. Wu, “Cell Culture,” World Press, Xi’an, 1996.
[9]	M. H. Zhang, S. W. Ding, Z. X. Wang and Y. Z. Zhang, “Synthesis of Mesoporous NanoTiO2 Doped with sn by Auto-Assembly Method and Photo-Catalytic Property,” Sciences in China B, Vol. 48, No. 5, May, 2005, pp. 655-659. doi:10.1360/04yb0009
[10]	C. Hyeok, S. Elias and D. D. Dionysios, “Photocatalytic TiO2 Films and Membranes for the Development of Efficient Wastewater Treatment and Reuse Systems,” esalination, Vol. 202, No. 1, Janaury, 2000, pp. 199-206.