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KMID : 0893320090240040333
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Journal of Environmental Toxicology
2009 Volume.24 No. 4 p.333 ~ p.339
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The Effect of Nano-scale Zn-TiO2 and Pure TiO2 Particles were Prepared using a Hydrothermal Method on Zebrafish Embryogenesis
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Yeo Min-Kyeong
Kim Hyo-Eun
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Abstract
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In this study, we investigated the biological toxicity of nano-scale Zn (0.1, 0.5, and 1 mol%)-doped TiO2 and pure TiO2 nanoparticles using zebrafish embryogenesis as our model organism. Zn-doped TiO2 nanoparticles were prepared using a conventional hydrothermal method for the insertion of zinc into the TiO2 framework. The characters of Zn-doped TiO2 (0.1%, 0.5%, 1%Zn) and pure TiO2 were about 7~8 nm. These sizes were smaller than 100~200 nm of TiO2 was prepared using the sol-gel method. Particularly, in this study, we found no significant biological toxicity in the hatching rate and abnormal rate under expose pure TiO2 and Zn-doped TiO2 nanoparticles were prepared using a conventional hydrothermal method of zebrafish. It was different from the biological damage under TiO2 nanoparticles were prepared using sol-gel method. We assessed that the damage was not linked to the particle’s nanometer size, but rather due to the prepare method. Moreover, TiO2 nanoparticles were prepared using a hydrothermal method were not shown to cause cytotoxic effects, like apoptosis and necrosis, that are the major markers of toxicity in organisms exposed to nanomaterials. Therefore, there is some relationship with biological toxicity of nanoparticles and the prepare method of nanometer size particles.
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KEYWORD
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Zn-doped TiO2, Nano scale, hydrothermal method, sol-gel method
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