The evolution of the electric properties of Nb₂O₅, Ta₂O₅ and WO3 films, at different formation potentials (Ef), in 0.1M HClO4 and 0.1M KOH, were followed with electrochemical impedance spectroscopy (EIS). During the potentiostatic growth, the EIS spectra were acquired every hour, maintaining the potentiostatic pulse during 20h. Nb₂O₅ , Ta₂O₅...
La obtención de nanotubos de TiO₂ mediante anodizado en electrolitos con iones fluoruro, ha tenido un gran auge en los últimos años debido a la facilidad de implementación de la técnica, su reproducibilidad, bajo costo y por sobre todo, la posibilidad de obtener nanotubos de TiO₂ orientados verticalmente. Estas películas...
This research presents a sustainable alternative to recover rare earth elements (REE) from cathode ray tube (CRT) wastes from discarded televisions. Different organic and inorganic ligands were tested as leaching agents, the best being the pyrophosphate ion (P2O7 4 ˉ). Thermodynamic analysis predicts the formation of soluble REE species complexed...
