Publication

Integrated systems for water cleavage by visible light; sensitization of titanium dioxide particles by surface derivatization with ruthenium complexes

Michael Graetzel
1984
Journal Articles

Abstract

Irradiation of acidic (pH 2) solutions of RuL32+ 2Cl− (L = diisopropyl 2,2′‐bipyridine‐4,4′ ‐dicarboxylate) in the presence of TiO2 at 100°C leads to the loss of one bipyridyl ligand and the chemical fixation of RuL2 at the surface of teh TiO2 particles through formation of Ru‐O‐Ti bonds. These surface complexes are very stable and shift the absorption onset of TiO2 beyond 600 mm. Efficient sensitization H2‐generation is achieved with this system beginning in the wave length domain between 590 and 665 nm. Preliminary water cleavage experiments with bifunctional TiO2/Pt/RuO2 redox catalyst are reported.

Official source

https://infoscience.epfl.ch/entities/publication/2f905393-e070-46ca-b0f0-c374c3be7f1c

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Michael Graetzel
1984
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/2f905393-e070-46ca-b0f0-c374c3be7f1c

About this result

Related concepts (32)

Riemann surface

In mathematics, particularly in complex analysis, a Riemann surface is a connected one-dimensional complex manifold. These surfaces were first studied by and are named after Bernhard Riemann. Riemann surfaces can be thought of as deformed versions of the complex plane: locally near every point they look like patches of the complex plane, but the global topology can be quite different. For example, they can look like a sphere or a torus or several sheets glued together.

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A dye-sensitized solar cell (DSSC, DSC, DYSC or Grätzel cell) is a low-cost solar cell belonging to the group of thin film solar cells. It is based on a semiconductor formed between a photo-sensitized anode and an electrolyte, a photoelectrochemical system. The modern version of a dye solar cell, also known as the Grätzel cell, was originally co-invented in 1988 by Brian O'Regan and Michael Grätzel at UC Berkeley and this work was later developed by the aforementioned scientists at the École Polytechnique Fédérale de Lausanne (EPFL) until the publication of the first high efficiency DSSC in 1991.

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Related publications (19)

Integrated systems for water cleavage by visible light; sensitization of titanium dioxide particles by surface derivatization with ruthenium complexes

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