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The incapability of conventional biological wastewater treatment to remove effectively biorecalcitrant and/or toxic pollutants, as well as the shortage of world water resources have promoted the research of more efficient and ecologically y friendly water ...
A unique nanostructured rod-like morphol. of hematite (α-Fe2O3), designed with no grain boundaries, has been investigated for the aim of a direct splitting of water at the hematite/electrolyte interface. Photoelectrochem. properties were studied by steady- ...
CO2 methanation over Ru/TiO2 was studied by using a diffuse-reflectance IR cell coupled with a continuous-feed recycle reactor. Metal-adsorbed CO is a major reaction intermediate and at 120 Deg occupies approx. 40% of the available Cu surface, while CH4 fo ...
The photodegradation of isoproturon (IP) was performed using TiO2 supported on glass rings in a 1.5 l coaxial rector. After 60 min of phototreatment, IP was completely eliminated and about 80% of dissolved organic carbon (DOC) remained in solution. This ef ...
There is a wide class of electrochemical systems which present a sudden transition from a high to a low reaction rate region in function of an external parameter. This sudden transition is accompanied by the growth of a surface structure responsible for de ...
This research contributes to the study and development of a new degradation technique that couples solar and biological processes for the treatment of biorecalcitrant, nonbiodegradable, and/or toxic organic substances present in the aqueous medium. Efficie ...
A bulk GaN half-wave (lambda /2) cavity is grown on Si(Ill) substrate by molecular beam epitaxy. It is embedded between twelve AlN/(Al,Ga)N quaterwave stacks and the silicon substrate, which acts as a metallic bottom mirror in the investigated wavelength r ...
We have calculated the effect of alloy interdiffusion on the one-dimensional energy confinement of (Al,Ga)As/GaAs crescent shaped quantum wire structures. We show that the energy splitting between excited states may be greatly enhanced by the interdiffusio ...
Using a first-principles approach, we study Si 2p core-level shifts at water and hydrogen covered Si(001)2 x 1 surfaces. After allowing for full relaxation of the surface structures, core-level shifts are calculated including core-hole relaxation effects. ...
The advantage of coupling a diffuse-reflectance infrared cell with a continuous-feed recycle reactor for in situ kinetic and mechanistic studies is illustrated in the study of CO2 methanation over Ru/TiO2. From transient and steady-state experiments, metal ...
