Gonell-Gómez, F.; Puga Vaca, A.; Julián López, B.; García Gómez, H.; Corma Canós, A. (2016). Copper-doped titania photocatalysts for simultaneous reduction of CO2 and production of H-2 from aqueous sulfide. Applied Catalysis B: Environmental. 180:263-270. doi:10.1016/j.apcatb.2015.06.019
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/82719
Title:
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Copper-doped titania photocatalysts for simultaneous reduction of CO2 and production of H-2 from aqueous sulfide
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Author:
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Gonell-Gómez, Francisco
Puga Vaca, Alberto
Julián López, Beatriz
García Gómez, Hermenegildo
Corma Canós, Avelino
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UPV Unit:
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Universitat Politècnica de València. Escuela Técnica Superior de Ingenieros Industriales - Escola Tècnica Superior d'Enginyers Industrials
Universitat Politècnica de València. Instituto Universitario Mixto de Tecnología Química - Institut Universitari Mixt de Tecnologia Química
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Issued date:
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Abstract:
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Copper-doped titanium dioxide materials with anatase phase (Cu-TiO2, atomic Cu contents ranging from 0 to 3% relative to the sum of Cu and Ti), and particle sizes of 12-15 nm, were synthesised by a solvo-thermal method ...[+]
Copper-doped titanium dioxide materials with anatase phase (Cu-TiO2, atomic Cu contents ranging from 0 to 3% relative to the sum of Cu and Ti), and particle sizes of 12-15 nm, were synthesised by a solvo-thermal method using ethanol as the solvent and small amounts of water to promote the hydrolysiscondensation processes. Diffuse reflectance UV-vis spectroscopy show that the edges of absorption of the titania materials are somewhat shifted to higher wavelengths due to the presence of Cu. X-ray photoelectron spectroscopy (XPS) indicate that Cu(II) is predominant. Photocatalytic CO2 reduction experiments were performed in aqueous Cu-TiO2 suspensions under UV-rich light and in the presence of different solutes. Sulfide was found to promote the efficient production of H-2 from water and formic acid from CO2. The effect of the Cu content on the photoactivity of Cu-TiO2 was also studied, showing that copper plays a role on the photocatalytic reduction of CO2.
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Subjects:
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Carbon dioxide
,
Photocatalysis
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Copper-doped TiO2
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Sulfide
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Wastewater
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Copyrigths:
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Reserva de todos los derechos
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Source:
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Applied Catalysis B: Environmental. (issn:
0926-3373
) (eissn:
1873-3883
)
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DOI:
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10.1016/j.apcatb.2015.06.019
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Publisher:
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Elsevier
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Publisher version:
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http://doi.org/10.1016/j.apcatb.2015.06.019
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Project ID:
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Spanish Ministry of Economy and Competitiveness (Severo Ochoa)
...[+]
Spanish Ministry of Economy and Competitiveness (Severo Ochoa)
Spanish Government AP2010-2748 MAT2011-27008
Jaume I University P1 1B2014-21
Consejo Superior de Investigaciones Cientifficas (CSIC)
European Social Fund (ESF)
Spanish Ministry of Economy and Competitiveness CTQ2012-32315
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Thanks:
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Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and CTQ2012-32315) is gratefully acknowledged. F.G. and B.J.-L. are thankful for financial support from Spanish Government (AP2010-2748 ...[+]
Financial support by the Spanish Ministry of Economy and Competitiveness (Severo Ochoa and CTQ2012-32315) is gratefully acknowledged. F.G. and B.J.-L. are thankful for financial support from Spanish Government (AP2010-2748 PhD grant and MAT2011-27008 project) and Jaume I University (P1 1B2014-21 project). SCIC from Jaume I University and Servicio de Microscopia Electronica at Universitat Politecnica de Valencia are also acknowledged for instrumental facilities. A.V.P. is grateful to both the Consejo Superior de Investigaciones Cientifficas (CSIC) and the European Social Fund (ESF) for a JAE-Doc postdoctoral grant. Lichen Liu is gratefully acknowledged for assistance in recording HRTEM images.
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Type:
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Artículo
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