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Organic-ligand-assisted supercritical hydrothermal synthesis of titanium oxide nanocrystals leading to perfectly dispersed titanium oxide nanoparticle in organic phase

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Abstract

Titanium oxide (TiO2) nanocyrstals which are perfectly dispersed in organic solvents are synthesized by organic-ligand-assisted supercritical hydrothermal synthesis. The addition of hexaldehyde to the supercritical hydrothermal synthesis of TiO2 leads to the in-situ surface modification, which enables the synthsized TiO2 nanocrystals to be perfectly dispersed in iso-octane because of its hydrophobic nature. Further, the one-pot synthesis of hybrid materials results in the significant reduction of the particles size, probably due to the capping effect of hexaldehyde to suppress the particles growth.

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Acknowledgments

This work was supported by a Scientific Research Grant from the Ministry of Education, Science, Sports, and Culture of Japan (T.A.). This research was also partly supported by the HEIWA NAKAJIMA foundation (T.A.) and by a Grant-in-Aid for the COE project, Giant Molecules and Complex Systems, 2002.

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Authors and Affiliations

  1. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan

    Tahereh Mousavand, Jing Zhang, Satoshi Ohara, Mitsuo Umetsu, Takashi Naka & Tadafumi Adschiri

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  1. Tahereh Mousavand
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  2. Jing Zhang
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  3. Satoshi Ohara
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  4. Mitsuo Umetsu
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  5. Takashi Naka
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  6. Tadafumi Adschiri
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Correspondence to Tadafumi Adschiri.

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Mousavand, T., Zhang, J., Ohara, S. et al. Organic-ligand-assisted supercritical hydrothermal synthesis of titanium oxide nanocrystals leading to perfectly dispersed titanium oxide nanoparticle in organic phase. J Nanopart Res 9, 1067–1071 (2007). https://doi.org/10.1007/s11051-006-9186-2

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  • DOI: https://doi.org/10.1007/s11051-006-9186-2

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