Photocatalytic behavior of silver vanadates: Microemulsion synthesis and post-reaction characterization
Entity
UAM. Departamento de Química Física AplicadaPublisher
Elsevier B.V.Date
2013-05-15Citation
10.1016/j.cej.2012.11.102
Chemical Engineering Journal 224.1 (2013): 24-31
ISSN
1385-8947DOI
10.1016/j.cej.2012.11.102Funded by
The authors thank the funding from MICINN Project CTQ2010-14872/BQUProject
Gobierno de España. CTQ2010-14872/BQUEditor's Version
http://dx.doi.org/10.1016/j.cej.2012.11.102Subjects
Dye photodegradation; Silver vanadates; Used-catalysts characterization; Visible-light-driven photocatalysts; QuímicaRights
© 2012 Elsevier B.V.Abstract
Silver vanadates with light absorption properties in the visible region were successfully prepared by a low temperature pathway (not exceeding 110°C) using an optimized microemulsion methodology. The resulting materials were evaluated as photocatalysts in Rhodamine B photodegradation and characterized before and after reaction. The silver vanadates displayed silver metallic nanoparticles decorating the surface. The as-prepared Ag3VO4 catalyst was the most active. Nevertheless, this silver vanadate suffered important changes during reaction. The initial structure evolves yielding a silver pyrovanadate, Ag4-V2O7, with a concomitant increase of the number and size of the silver metallic nanoparticles. The synergy between these Ag0 particles and the photoactivity of the Ag4V2O7 phase seems responsible of the high photoactivity of this material
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Google Scholar:Belver Coldeira, Carolina
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Adán, Cristina
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García Rodríguez, Sergio
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Fernández García, Marcos
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