Centre National De La Recherche Scientifique

Ifp Energies Nouvelles

Universite Claude Bernard – Lyon1

Cnrs

Eric Puzenat

Denis Uzio

Antoine Fecant

Luc Brohan

Hari Sutrisno

Dina Lofficial

Annabelle Rouet

Olivier Joubert

Christophe Geantet

Yves Piffard

Maria Teresa Caldes-Rouillon

Pavel Afanasiev

Gilles Berhault

Elodie Blanco

Hélène Terrisse

Hari Faculty Of Science Sutrisno

Hèlène Terrisse

The invention relates to a composition that contains a first semiconductor SC1, particles that comprise one or more element(s) M in the metal state selected from among an element of groups IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA and VA of the periodic table, and a second semiconductor SC2 that comprises indium oxide, with said first semiconductor SC1 being in direct contact with said particles that comprise one or more element(s) M in the metal state, with said particles being in direct contact with said second semiconductor SC2 that comprises indium oxide in such a way that the second semiconductor SC2 covers at least 50% of the surfaces of the particles that comprise one or more element(s) M in the metal state. The invention also relates to its preparation method as well as its application of photocatalysis.

Photocatalytic composition that comprises metal particles and two semiconductors including one made of indium oxide

The invention relates to a composition that contains a first semiconductor SC1, particles that comprise one or more element(s) M in the metal state selected from among an element of groups IVB, VB, VIB, VIIB, VIIIB, IB, IIB, IIIA, IVA and VA of the periodic table, and a second semiconductor SC2 that comprises cerium oxide, with said first semiconductor SC1 being in direct contact with said particles that comprise one or more element(s) M in the metal state, with said particles being in direct contact with said second semiconductor SC2 that comprises cerium oxide in such a way that the second semiconductor SC2 covers at least 50% of the surfaces of the particles that comprise one or more element(s) M in the metal state. The invention also relates to its preparation method as well as its application of photocatalysis.

Photocatalytic composition comprising metallic particles and two semiconductors, one of which is composed of cerium oxide

The invention concerns a composition comprising a mixture of zinc sulphide (ZnS) and molybdenum sulphide (MoS), in which the Mo/Zn molar ratio is in the range 0.01 to 1.9. The invention also pertains to a process for its preparation as well as to its application in photocatalysis and more particularly to its application in photocatalysis for the production of dihydrogen from water (HO) and/or hydrogen sulphide (HS) and/or any other source of protons in the presence of a source emitting in the ultraviolet and/or visible spectrum.

Metal sulphide-based composite photocatalyst for producing hydrogen

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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Lyons, France

Eric Puzenat