Structural and Functional Behaviour of Ce-Doped Wide-Bandgap Semiconductors for Photo-Catalytic Applications
Articolo
Data di Pubblicazione:
2021
Abstract:
Increasing the photocatalytic efficiency of earth-abundant wide-bandgap semiconductors is
of high interest for the development of cheap but effective light-driven chemical conversion processes.
In this study, the coupling of ZnO and TiO2 with low contents of the rare-earth Ce species aimed
to assess the photo-catalytic performance of the two semiconductors (SC). Structural and optical
characterizations were performed to estimate the effect of the different interactions between Zn2+,
Ti4+ and Ce4+ ions, and how the photo-responsive behaviour of Ce-Ti and Ce-Zn composites was
affected. Therefore, photo-catalytic tests were performed for all Ce-modified SC to assess both their
photo-oxidative and photo-reductive properties. Amongst all the tested materials, only Zn-based
samples resulted in being suitable for the photo-oxidation of the methylene blue (MB) organic
pollutant in a synthetic-dependent fashion.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
rare earth; nanomaterials; carbon dioxide
Elenco autori:
Forghieri, Giulia; Zanardo, Danny; Ghedini, Elena; Menegazzo, Federica; Giordana, Alessia; Cerrato, Giuseppina; Di Michele, Alessandro; Cruciani, Giuseppe; Signoretto, Michela
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