New hollandite oxides: TiO 2(H) and K 0.06TiO 2
Abstract
The topotactic oxidation of the bronze K xTiO 2 ( x close to 0.25), with a hollandite structure, leads to lower x values. By complete oxidation of the parent bronze a new form of titanium dioxide TiO 2(H) is obtained. Its structure is the iono-covalent framework of hollandite. By heating above 410°C, TiO 2(H) transforms into anatase. Starting from a single crystal of the precursor bronze it is possible to obtain a partly disintercalated single-crystal product. In this way, K 0.06TiO 2 has been prepared and its structure determined.
- Publication:
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Journal of Solid State Chemistry France
- Pub Date:
- July 1989
- DOI:
- 10.1016/0022-4596(89)90204-1
- Bibcode:
- 1989JSSCh..81...78L