首页|Improvement of microporous silicoaluminophosphate properties by Fe and Ti insertion for photocatalytic hydrogen generation under visible light
Improvement of microporous silicoaluminophosphate properties by Fe and Ti insertion for photocatalytic hydrogen generation under visible light
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NSTL
Elsevier
Iron- and/or titanium-containing microporous silicoaluminophosphate catalysts have been synthesized, under hydrothermal conditions, using triethylamine structure directing, to obtain the aluminophosphate five phase (AFI). These solids were characterized by X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), scanning electron microscopy (SEM), nitrogen adsorption measurements, UV-visible diffuse reflectance spectroscopy (UV-Vis-DRS) and X-ray photoelectron spectroscopy (XPS). The physico-chemical analyses have revealed that Fe- and/or Ti-containing materials have significant photocatalytic properties. Thus, they have been valorized in the photocatalytic hydrogen production from water. The reaction has been conducted, under visible radiations, and the process has been followed by photo-electrochemical characterization (PEC). Hydrogen is the only produced gas and the reaction takes place in the conduction band where water is reduced to hydrogen while the holes are entrapped using hole scavengers. The results show that our catalysts exhibit a remarkably high hydrogen evolution rate and remain stable during reuse up to at least five cycles.
NSTL
Elsevier
