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Jie Li, Ti-chang Sun, Yong Wang, Li-na Wang, Jing-kui Qu, and Tao Qi, Preparation and film-growing mechanism of hydrous zirconia coated on TiO2, Int. J. Miner. Metall. Mater., 17(2010), No. 5, pp.660-667. https://dx.doi.org/10.1007/s12613-010-0371-z
Jie Li, Ti-chang Sun, Yong Wang, Li-na Wang, Jing-kui Qu, and Tao Qi, Preparation and film-growing mechanism of hydrous zirconia coated on TiO2, Int. J. Miner. Metall. Mater., 17(2010), No. 5, pp.660-667. https://dx.doi.org/10.1007/s12613-010-0371-z
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Preparation and film-growing mechanism of hydrous zirconia coated on TiO2

摘要: To overcome the photochemical activity of rutile used as a pigment and improve its durability in application, hydrous zirconia-coated TiO2 was prepared by the precipitation method. High-resolution transmission electron microscope (HRTEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and surface structure of hydrous zirconia-coated TiO2. The ζ-potential and ultraviolet (UV) absorption of both coated and uncoated rutile were examined. The results show that hydrous zirconia can not only improve the durability but also raise the lightness. A suitable ZrO2 content of hydrous zirconia-coated TiO2 is about 1.0wt%, and a dense film on the surface of rutile can be formed with better pigmentary properties. Based on the thermodynamic analysis, the zirconia-coating process and the film growth mechanism were discussed.

 

Preparation and film-growing mechanism of hydrous zirconia coated on TiO2

Abstract: To overcome the photochemical activity of rutile used as a pigment and improve its durability in application, hydrous zirconia-coated TiO2 was prepared by the precipitation method. High-resolution transmission electron microscope (HRTEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the morphology and surface structure of hydrous zirconia-coated TiO2. The ζ-potential and ultraviolet (UV) absorption of both coated and uncoated rutile were examined. The results show that hydrous zirconia can not only improve the durability but also raise the lightness. A suitable ZrO2 content of hydrous zirconia-coated TiO2 is about 1.0wt%, and a dense film on the surface of rutile can be formed with better pigmentary properties. Based on the thermodynamic analysis, the zirconia-coating process and the film growth mechanism were discussed.

 

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