Abstract

SnO2 nanocrystals were prepared by precipitation in dodecylamine at 100°C, then they were reacted with vanadium chloromethoxide in oleic acid at 250°C. The resulting materials were heat-treated at various temperatures up to 650°C for thermal stabilization, chemical purification and for studying the overall structural transformations. From the crossed use of various characterization techniques, it emerged that the as-prepared materials were constituted by cassiterite SnO2 nanocrystals with a surface modified by isolated V(IV) oxide species. After heat-treatment at 400°C, the SnO2 nanocrystals were wrapped by layers composed of vanadium oxide (IV-V mixed oxidation state) and carbon residuals. After heating at 500°C, only SnO2 cassiterite nanocrystals were obtained, with a mean size of 2.8nm and wrapped by only V2O5-like species. The samples heat-treated at 500°C were tested as RhB photodegradation catalysts. At 10-7M concentration, all RhB was degraded within 1h of reaction, at a much faster rate than all pure SnO2 materials reported until now.

Autore Pugliese

• Giannini Cinzia , Altamura Davide

Tutti gli autori

• Epifani M.; Kaciulis S.; Mezzi A.; Altamura D.; Giannini C.; Diaz R.; Force C.; Genc A.; Arbiol J.; Siciliano P.; Comini E.; Concina I.

Titolo volume/Rivista

Scientific reports

Anno di pubblicazione

2017

ISSN

2045-2322

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile