Photoactivity of nanostructured porous Nb2O5 : effect of Pt, Ta, Cu, and Ti impregnation
Fecha
2022Autor
Materia
Abstract
In the present work, we report the obtaining of nanostructured porous Nb2O5 by anodizing process, with Pt, Ta, Cu, or Ti impregnation, and by magnetron sputtering process. The techniques of scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used to evaluate the morphology, and the composition and crystalline structure of nanoporous Nb2O5. The photocatalytic activity was evaluated by electrochemical photocurrent tests under UV light illumination. Nanostruc ...
In the present work, we report the obtaining of nanostructured porous Nb2O5 by anodizing process, with Pt, Ta, Cu, or Ti impregnation, and by magnetron sputtering process. The techniques of scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were used to evaluate the morphology, and the composition and crystalline structure of nanoporous Nb2O5. The photocatalytic activity was evaluated by electrochemical photocurrent tests under UV light illumination. Nanostructured porous Nb2O5 with Pt, Ta, Cu, and Ti impregnation presented bandgap reduction and 10 times higher photocurrent density in the presence of UV light when compared to the not impregnated nanoporous Nb2O5. ...
En
International Journal of Ceramic Engineering and Science [recurso eletrônico]. [Hoboken]. Vol. 4, n. 6 (nov. 2022), p. 379-390
Origen
Estranjero
Colecciones
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Artículos de Periódicos (39341)Ciencias Exactas y Naturales (5974)
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Artículos de Periódicos (39341)Ingeniería (2403)
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