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One step preparation of highly dispersed TiO nanoparticles

Chemical Research in Chinese Universities, ISSN: 1005-9040, Vol: 31, Issue: 5, Page: 688-692
2015
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Article Description

A facile approach was developed to prepare highly dispersed TiO nanoparticles with selected phase. The crystallization phase of the nanoparticles can be easily tuned from anatase to rutile by the dosage of hydrochloric acid in the reaction system. The crystallite size of the as-prepared anatase TiO nanoparticles was ca. 3.2 nm with high dispersion. A transparent TiO colloid was obtained by dispersing the as-prepared anatase TiO nanoparticles in deionized water without any organic additives added. The concentration of TiO-HO colloid can be as high as 1600 g/L. The optical transmittance of TiO-HO colloid with a low concentration was nearly 100% in the visible region. Furthermore, anatase TiO nanoparticles(TiO-NPs) showed superior photocatalytic performance compared to rutile TiO-NPs.

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