An inorganic hydrothermal route to photocatalytically active bismuth vanadate
| Autor: | Ying Zhou, Roman Kontic, Andre Heel, Greta R. Patzke, Kathrin Vuille, Benjamin Probst |
|---|---|
| Přispěvatelé: | University of Zurich, Patzke, Greta R |
| Rok vydání: | 2010 |
| Předmět: |
10120 Department of Chemistry
1503 Catalysis Process Chemistry and Technology Inorganic chemistry Catalysis Hydrothermal circulation 540: Chemie chemistry.chemical_compound Crystallinity chemistry Bismuth vanadate 540 Chemistry Photocatalysis Water splitting Hydrothermal synthesis Vanadate 1508 Process Chemistry and Technology Oxygen evolution Visible spectrum |
| Zdroj: | Applied Catalysis A: General. 375:140-148 |
| ISSN: | 0926-860X |
| DOI: | 10.1016/j.apcata.2009.12.031 |
| Popis: | BiVO4 has attracted research interest as one of the most promising visible-light-driven oxidic photocatalysts for water splitting and wastewater treatment. Highly crystalline BiVO4 particles with a homogeneous morphology are now available from a straightforward, one-step hydrothermal protocol. The facile morphology control of BiVO4 particles in the Bi(NO3)(3)center dot 5H(2)O/V2O5/K2SO4 hydrothermal system is achieved through K2SO4 as an inorganic additive that brings forward materials with a high photocatalytic activity. BiVO4 particles generated from this inorganic additive-assisted approach outperform BiVO4 materials obtained via other preparative routes in the decomposition of methylene blue (MB) under visible light irradiation. The relations between morphology, crystallinity and photocatalytic O-2 evolution in the presence of AgNO3 and FeCl3 as sacrificial reagents were studied with respect to the hydrothermal optimization of material properties. Furthermore, the Bi(NO3)(3)center dot 5H(2)O/V2O5/K2SO4 hydrothermal system brings forward potassium vanadate fibers as a second phase that also exhibits promising photocatalytic properties with respect to the decomposition of MB in the presence of visible light. (C) 2009 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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