Inorganic Photocatalytic Enhancement : Activated RhB Photodegradation by Surface Modification of SnO2 Nanocrystals with V2O5-like species
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 2.8 nm and wrapped by only V2O5-like species. The samples heat-treated at 500 °C were tested as RhB photodegradation catalysts. At 10-7 M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO2 materials reported until now.
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| Medienart: |
E-Artikel |
| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:7 |
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| Enthalten in: |
Scientific reports - 7(2017) vom: 16. März, Seite 44763 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Epifani, Mauro [VerfasserIn] |
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Date Completed 04.09.2018 Date Revised 13.11.2018 published: Electronic ErratumIn: Sci Rep. 2017 Jun 15;7:46855. - PMID 28731461 Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1038/srep44763 |
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NLM269901965 |
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| 500 | |a ErratumIn: Sci Rep. 2017 Jun 15;7:46855. - PMID 28731461 | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a 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 2.8 nm and wrapped by only V2O5-like species. The samples heat-treated at 500 °C were tested as RhB photodegradation catalysts. At 10-7 M concentration, all RhB was degraded within 1 h of reaction, at a much faster rate than all pure SnO2 materials reported until now | ||
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| 700 | 1 | |a Altamura, Davide |e verfasserin |4 aut | |
| 700 | 1 | |a Giannini, Cinzia |e verfasserin |4 aut | |
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| 700 | 1 | |a Force, Carmen |e verfasserin |4 aut | |
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