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Preparation of Hollow TiO2 Spheres of the Desired Polymorphs by Layer-by-Layer Assembly of a Water-Soluble Titanium Complex and Hydrothermal Treatment

  1. Kiyofumi Katagiri1,2,
  2. Hitoshi Inami2,
  3. Kunihito Koumoto2,
  4. Kei Inumaru1,
  5. Koji Tomita3,
  6. Makoto Kobayashi4,
  7. Masato Kakihana4

Article first published online: 6 JUN 2012

DOI: 10.1002/ejic.201200421

Issue

European Journal of Inorganic Chemistry

European Journal of Inorganic Chemistry

Volume 2012, Issue 20, pages 3267–3272, July 2012

Additional Information

How to Cite

Katagiri, K., Inami, H., Koumoto, K., Inumaru, K., Tomita, K., Kobayashi, M. and Kakihana, M. (2012), Preparation of Hollow TiO2 Spheres of the Desired Polymorphs by Layer-by-Layer Assembly of a Water-Soluble Titanium Complex and Hydrothermal Treatment. Eur. J. Inorg. Chem., 2012: 3267–3272. doi: 10.1002/ejic.201200421

Author Information

  1. 1

    Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan, Fax: +81-82-424-5494

  2. 2

    Department of Applied Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan

  3. 3

    Department of Chemistry, School of Science, Tokai University, 4-1-1 Kitakaname, Hiratsuka 259-1292, Japan

  4. 4

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

Publication History

  1. Issue published online: 3 JUL 2012
  2. Article first published online: 6 JUN 2012
  3. Manuscript Received: 27 APR 2012

Funded by

  • Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. Grant Numbers: 22107011, 2206

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Keywords:

  • Hydrothermal synthesis;
  • Titan­ates;
  • Self-assembly;
  • Hollow capsules;
  • Layer-by-layer assembly

Abstract

A facile approach, based on the polyelectrolyte-mediated electrostatic adsorption of a water-soluble titanium complex on colloid templates and hydrothermal treatment, is presented for the formation of hollow TiO2 spheres of the desired polymorphs. The core–shell particles were formed by the alternate deposition of titanium–glycolate complex 1 and positively charged polyelectrolyte, poly(allylamine hydrochloride) (PAH) on spherical polystyrene (PS) templates by utilizing electrostatic interactions for shell formation. Hollow spheres formed with the polyionic complex of 1 and PAH were obtained by removal of the PS templates. Formation of the polyionic complex affected the crystallization of TiO2 from 1 by hydrothermal treatment. Hollow spheres of brookite and anatase were obtained by hydrothermal treatment at pH 4 and 10, respectively. The approach presented here can be exploited for the fabrication of novel advanced titania-based materials with desired structures and polymorphs.

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