Centre National De La Recherche Scientifique

Hari Sutrisno

Eric Puzenat

Luc Brohan

Annabelle Rouet

Olivier Joubert

Yves Piffard

Maria Teresa Caldes-Rouillon

Hélène Terrisse

The invention relates to a titanium aquo-oxo chloride and to a method for its preparation. The compound is in the form of crystals and has the following composition by weight: 26.91% Ti; 21.36% Cl; and 4.41% H, which corresponds to the formula [TiO(HO)]Cl.HCl.7HO. The method of preparation consists in hydrolyzing TiOCleither in an atmosphere whose moisture content is maintained between 50 and 60%, or by an alkali metal carbonate ACO, in order to obtain a titanium aquo-oxo chloride. The compound is useful as a semiconductor element of a photovoltaic cell or as a photocatalyst in air or water purification treatments.

Titanium aquo-oxo chloride and preparation method thereof

The invention relates to a titanium oxide-based polymer composition. The inventive composition comprises a TiO(OH)(HO)(x+y&#x2212;+z=3) titanium oxide-based polymer in the form of a gel or sol. Said polymer, which has a one-dimensional (1D) structure, is made from concentrically-wound fibers having a periodicity which is deduced from the spacing between said fibers, of between 3.5 &#x212b; and 4 &#x212b;. Each fiber comprises TiOoctahedrons and each TiOoctahedron shares two opposite edges with two adjacent octahedrons (2.times.2.92 &#x212b;) in order to form infinite chains which develop along the axis of a fiber. According to the invention, two adjacent chains form double lines as a result of the shared edges (2.times.3.27 &#x212b;). The inventive polymer is suitable for use as a photosensitive element in a photovoltaic cell, such as a sunscreen for a window.

Titanium oxide-based sol-gel polymer

The invention relates to a titanium oxide-based polymer composition. The inventive composition comprises a TiO(OH)(HO)(x+y+z=3) titanium oxide-based polymer in the form of a gel or sol. Said polymer, which has a one-dimensional (1D) structure, is made from concentrically-wound fibers having a periodicity which is deduced from the spacing between said fibers, of between 3.5 &#x212b; and 4 &#x212b;. Each fiber comprises TiOoctahedrons and each TiOoctahedron shares two opposite edges with two adjacent octahedrons (2&#xd7;2.92 &#x212b;) in order to form infinite chains which develop along the axis of a fiber. According to the invention, two adjacent chains form double lines as a result of the shared edges (2&#xd7;3.27 &#x212b;). The inventive polymer is suitable for use as a photosensitive element in a photovoltaic cell, such as a sunscreen for a window.

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Yogyakarta, Indonesia

Hari Sutrisno