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Inorganic Photocatalytic Enhancement: Activated RhB Photodegradation by Surface Modification of SnO 2 Nanocrystals with V 2 O 5 -like species.
Inorganic Photocatalytic Enhancement: Activated RhB Photodegradation by Surface Modification of SnO 2 Nanocrystals with V 2 O 5 -like species.
- Source :
-
Scientific reports [Sci Rep] 2017 Mar 16; Vol. 7, pp. 44763. Date of Electronic Publication: 2017 Mar 16. - Publication Year :
- 2017
-
Abstract
- SnO <subscript>2</subscript> 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 SnO <subscript>2</subscript> nanocrystals with a surface modified by isolated V(IV) oxide species. After heat-treatment at 400 °C, the SnO <subscript>2</subscript> nanocrystals were wrapped by layers composed of vanadium oxide (IV-V mixed oxidation state) and carbon residuals. After heating at 500 °C, only SnO <subscript>2</subscript> cassiterite nanocrystals were obtained, with a mean size of 2.8 nm and wrapped by only V <subscript>2</subscript> O <subscript>5</subscript> -like species. The samples heat-treated at 500 °C were tested as RhB photodegradation catalysts. At 10 <superscript>-7</superscript> M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO <subscript>2</subscript> materials reported until now.
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 7
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 28300185
- Full Text :
- https://doi.org/10.1038/srep44763