MENDOZA-DIAZ , Maria-Isabel

An attractive approach for the energy industry's transition to sustainable and clean energy is the use of solar radiation to produce H2. Among the different artificial photocatalytic processes, H2 production through water splitting is probably the most intensely studied as the molecular gas exhibits a high volumetric energy density, no carbon...

An attractive approach for the energy industry's transition to sustainable and clean energy is the use of solar radiation to produce H2. Among the different artificial photocatalytic processes, H2 production through water splitting is probably the most intensely studied as the molecular gas exhibits a high volumetric energy density, no carbon...

A new concept for a 3D microstructured photocatalyst for hydrogen production by water-splitting under direct sunlight is proposed. The optimization process of deep-reactive ion etching process and the subsequent deposition of TiO2 thin films by physical vapor deposition decorated with Au nanoparticles allows H2 production by direct water...

A new concept for a 3D microstructured photocatalyst for hydrogen production by water-splitting under direct sunlight is proposed. The optimization process of deep-reactive ion etching process and the subsequent deposition of TiO2 thin films by physical vapor deposition decorated with Au nanoparticles allows H2 production by direct water...

Due to the growing appetite for developing compatible miniaturized micropyrotechnics systems, the traditionally used electro-pyrotechnic initiators have been upgraded from a bridge wire to a semiconductor bridge (SCB) via microelectromechanical systems (MEMS) technology. As an innovative ignition device, SCB can generate heat and plasma upon an...

The use of semiconductors for hydrogen production through water splitting represents a clean and long lasting renewable source of energy, since it is produced from natural sources such as sunlight and water. Among semiconductors, titanium dioxide (TiO) remains a benchmark photocatalyst with high stability, low cost, low toxicity and it is well...

Anatase/rutile consituted TiO2 thin films were prepared by sputter-deposition, and the influence of post-annealing step with a narrow window at 200 °C, revealed a gaining factor of 5 in the H2 production. An in-depth analysis of the photocatalytic performance revealed the dominant role of intermediate states, rather than the hetero-crystalline...

National audience

The development of an efficient photocatalyst capable of producing enough hydrogen for applications in everyday life under direct sunlight exposure is still challenging. In this work, a new concept for a three-dimensional microstructured photocatalyst is proposed, in which a standard deep-reactive ion etching process allows for the...

This paper reports the synergetic effects of UV and visible light irradiation on the photocatalytic activity of well-defined nanostructures composed of TiO2 films and Au nanoparticles. New insights into the electronic as well as the chemical processes that drive water decomposition were obtained by varying the position of the NPs on top and at...

This paper reports the synergetic effects of UV and visible light irradiation on the photocatalytic activity of well-defined nanostructures composed of TiO2 films and Au nanoparticles (NPs). New insights into electronic as well as chemical processes that drive water decomposition were obtained by varying the position of the NPs on top and at...